Skip to main content
Adjust Text Size:

Frame your face in gorgeous style with these 0.92 carat stud earrings from D'Arte. Crafted in your choice of 14K yellow or white gold, each showcases baguette, square and round gemstones, including rhodolite, blue violet iolite, orange Madeira citrine, pink tourmaline, London blue topaz and dazzling diamonds. You'll love the eye-catching style and color! All of the compliments are nice, as well. They're perfect for any time wear, whether you're rocking jeans and a tee or a black cocktail dress.

Discover a new way to wear gold jewelry with D’Arte. Translated from “work of art” in Italian, each piece is truly unique, showcasing a trademarked textured gold pattern that adds dimension and distinction. From textiles to animal prints to artistic movements, each texture is symbolic in meaning and crafted from genuine 14 karat gold. Some pieces are finished with black rhodium for a greater contrast in the pattern. Unleash your inner artisan and let D’Arte Jewelry inspire you.

Features

  • Multi gemstones and diamonds are set in an artistically-inspired geometric pattern to provide a bold presence on your lobes.
  • Each design is as unique as its wearer!
  • Pair these stud earrings with matching enhancer pendant 209-678 to create a stunning coordinated style.

Details

  • Material Content:
  • 14K Yellow Gold
  • 14K White Gold
  • Plating Type: Black Rhodium
  • Finish: Brushed
  • Total Gram Wt: 5.126g
  • Stone Information:
  • Rhodolite : 2 / Baguette Shape / 4x2mm
  • Blue Violet Iolite: 2 / Square Shape / 3mm
  • Orange Madeira Citrine: 2 / Round Shape / 2.5mm / Heat
  • Pink Tourmaline: 2 / Round Shape / 2.5mm / Heat
  • London Blue Topaz: 2 / Round Shape / 2.5mm / Irradiated
  • White Diamond: 2 / Round Shape / 1.7mm
  • White Diamond: 2 / Round Shape / 2mm
  • Stone Type Total Ct Wt:
  • Rhodolite : 0.28ct.
  • Blue Violet Iolite: 0.20ct.
  • Orange Madeira Citrine: 0.10ct.
  • Pink Tourmaline: 0.12ct.
  • London Blue Topaz: 0.12ct.
  • White Diamond: 0.104ct.
  • Approximate Total Carat Weight of All Stones: 0.924ct.
  • Diamond Color Grade: G-H
  • Diamond Clarity Grade: I1 - I2
  • Length: 0.0625in.
  • Width: 0.0625in.
  • Height: 0.13in.
  • Back Type: Push and Post
  • Country of Origin: India

All weights pertaining to gemstones, including diamonds, are minimum weights. Additionally, please note that many gemstones are treated to enhance their beauty. View Gemstone Enhancements and Special Care Requirements for important information.

Product Disclaimer

Diamond    YellowGold    WhiteGold    14KGold    Citrine    Iolite    Rhodolite    Topaz    Tourmaline    Studs    

Diamond:

The value of a diamond is determined by the Four Cs: Cut, Color, Clarity and Carat weight.

Diamond Cut
The cut of a diamond (the depth, width and uniformity of the facets) determines the stone’s brilliance and sparkle. Even if a diamond has perfect color and clarity, a poor cut can make it look dull. A diamond’s proportions determine how well the light will reflect and refract within the stone, with symmetry of the cut being extremely important.

Diamond Color
Acting as a prism, a diamond can divide light into a spectrum of colors, reflecting light as colorful flashes called fire. Color within a diamond diminishes the brilliance of the stone by diminishing the spectrum of colors that are emitted. A colorless diamond disperses light throughout the entire stone. Therefore, the less color that is in a diamond, the more colorful its fire, the better its color grade, and the greater its value (and priced accordingly). Diamond color is graded using an alphabetical range from D-Z (D being totally colorless). Diamonds graded better than J are colorless or near-colorless, with color that is typically undetectable to the unaided eye. Color K-Z is especially noticeable when set in platinum or white gold.

Diamond Clarity
Most diamonds naturally have small internal flaws called inclusions, which interfere with the passage of light through the stone. The size, number, position and color of these imperfections determine a stone’s clarity grade.

  • FL (Flawless): No internal or external flaws
  • VVS1-VVS2 (Very Very Slightly Included): Very difficult to see inclusions under 10X magnification
  • VS1-VS2 (Very Slightly Included): Inclusions are seen under 10X magnification, but not typically visible to the unaided eye
  • SI1-SI2 (Slightly Included): Inclusions are highly visible under 10X magnification and may be visible to the unaided eye
  • I1-I2-I3 (Imperfect): Inclusions visible to the unaided eye

    Our diamonds have been evaluated and graded by GIA graduate gemologists using the standards established by GIA (The Gemological Institute of America). Through these guidelines, we no longer provide clarity grades for SINGLE cut diamonds.

    Diamond Carat
    Carat is the standard unit of measurement used to determine a diamond’s weight. Although two diamonds may have the same carat weight, their color and clarity may be different, thus determining each individual stone’s value. Additionally, since larger diamonds are more rare than smaller diamonds, diamond value tends to rise exponentially with carat weight.

    More About Diamonds
    The most precious of all gems, diamonds have an incredible rarity factor. It takes a minimum of one million diamonds to be mined in order to find a 1.00ct gem-quality diamond, so each 1.00ct quality diamond is literally one in a million. Making them even more incredible, the mining of diamonds requires moving and sifting 250 tons of the Earth’s crust to find just one diamond. Mining companies literally move mountains to find diamonds.

    Diamonds have the longest endurance of any substance known on Earth. Carbon dating has established that diamonds, on the average, are 3.4 billion years of age. They consist of pure carbon and there is no chemical difference between them and carbon powder (the lead pencil center). Obviously, however, the physical difference between carbon powder and a diamond is fascinating. Diamonds are created from a basketball-sized piece of pure carbon that becomes white-hot. It is squeezed to the size of a small pearl, turning from black to clear in the process and becoming the hardest material known to humans, ranking a 10.0 on the Mohs Scale . Because they are so hard, diamonds can only be ground and polished by using diamond dust that has been ground from other diamonds.

    Diamonds are found in a rainbow of colors. The value of a fancy-colored stone depends largely on the rarity of its color, the saturation of the color, and the purity of the color. Probably the most famous colored diamond is the Hope, which features a deep-blue color and weighs an amazing 45.52ct. It can be seen at the Smithsonian Institute in Washington, D.C.

    With diamonds found all over the world, America has a couple small producing diamonds mines, but it only produces industrial grades with non-gem grade material. These black and brown industrial-grade diamonds are widely used as cutting and grinding tools in various industries, such as oil drilling and stone carving.

    Diamonds have come to symbolize the ultimate gift of love and romance and, in the United States, are traditionally used in engagement and wedding rings. The tradition of the diamond solitaire engagement ring may have started in 1477, when the Archduke of Austria gave a large solitaire diamond to Mary of Burgundy for her hand in marriage. Amidst this tradition of romance, the diamond is also the birthstone for April and given as 10th, 30th, 60th and 75th anniversary gifts.

    Diamonds have been the pride of empires throughout time. Ancient Hindu followers believed diamonds were created by thunderbolts striking the ground. Ancient Greeks believed that diamonds were teardrops of the gods and splinters of stars that had fallen to Earth. The stones were believed to possess magical qualities and have powers far beyond the understanding of common man. Even the name stems from “adamas,” the Greek word for “unconquerable” and “indestructible.”

    The diamond is considered the most magical of all gems. When worn, it is believed to promote spirituality, even ecstasy, and is often utilized in meditation. The diamond promotes self-confidence in relations with the opposite sex and is often worn to conquer infertility. The diamond is the stone of love and is worn to ensure fidelity. Owing to its sparkling and flashing nature, it has long been regarded as a stone of protection and peace. It can be worn today for courage and strength, and represents fearlessness and invincibility.

    Since only diamonds can scratch other diamonds, it is important to wrap and store your diamond jewelry pieces separately so they do not touch one another. To clean jewelry at home, soak diamonds in warm, sudsy water made with any mild liquid detergent. Brush with a soft toothbrush and rinse and pat dry with a soft, lint-free cloth. Other effective cleaning methods include soaking diamonds in household ammonia, brand-name liquid jewelry cleaners, or even a glass of vodka.

    Yellow Gold
    By far the most common color of gold used in jewelry, yellow gold is gold in its natural shade. Yellow gold is usually alloyed with copper and silver to increase the strength of the metal. How yellow the metal is depends upon the content of gold. A 14-karat piece of jewelry will have a brighter yellow hue than a 10-karat piece. Likewise, an 18-karat piece of jewelry will have a deeper yellow than 14-karat gold, and so on.

    White Gold
    Although gold is most often thought of as having a soft, yellow glow, the metal is available in an entire spectrum of different hues. The different colors of gold depend upon with which metals the gold is alloyed, or mixed.

    Increasing in popularity in recent years, white gold has become fashionable as the preferred cool and contemporary look. White gold boasts the same properties as classic yellow gold, but achieves its white color by mixing with different alloys. In general, white gold is created when a nickel or palladium alloy (zinc and copper) is used. White gold may also be plated with an even whiter metal, such as rhodium, to enhance its cool appearance. As well, a white gold setting can enhance the rapture of white diamonds.

    Gold Karat
    Gold's softness and malleability make it a wonderful metal to work with when creating virtually any design in jewelry. But this softness can be a drawback as well. To make it stronger and more durable, gold is usually alloyed, or mixed, with other metals such as copper or silver. The higher a metal's percentage of gold content, the softer and more yellow the jewelry piece. The karat weight system used to measure gold in a piece is the same for all hues, including white and yellow gold.

    The word “carat” is Arabic, meaning “bean seed.” This is because historically seeds were used to measure weights of gold and precious stones. In the United States, “karat” with a “k” is used to measure gold's purity, while “carat” with a “c” is used in measuring a gemstone's size. The karat mark of gold represents the percentage of pure gold to alloy.

  • 24K is pure gold or 100% gold
  • 21K is 21/24ths gold content or 87.5% gold: In the United States, jewelry with this karatage or higher is rare. It is far more common in Europe, the Middle East and Southeast Asia.
  • 18K is 18/24ths gold content or 75% gold: This karatage is a popular high-end choice in the United States, Europe and other regions. Its popularity is spreading throughout North America.
  • 14K is 14/24ths gold content or 58.5% gold: This is the most common gold karatage in the United States because of its fine balance between gold content, durability and affordability.
  • 10K is 10/24ths gold content or 41.7% gold: This karatage is gaining popularity for its affordability and durability. Commonly used in everyday-wear jewelry such as rings, 10K gold beautifully withstands wear and tear. It is the lowest gold content that can be legally marked or sold as gold jewelry in the United States.

    In order to determine the karat weight of a specific item, simply look for the quality mark. Jewelry items will bear the stamp of their karatage based upon the United States or European system of marking. The United States system designates pieces by their karats—24K, 18K, 14K, 10K, etc. The European system designates pieces by their percentage of gold content. For instance, 10K gold is marked “417,” denoting 41.7% gold; 14K is marked “585,” denoting 58.5% gold; and 18K is marked “750,” denoting 75% gold; etc.

    Citrine
    Named from the French word for lemon, “citron,” citrine is a variety of quartz available in a range of golden hues from lemon, to straw, to sun yellow, to deep gold, to orange, brown and deep red. Darker colors are more highly valued, including the medium golden-orange and dark-sherry colors, sometimes called Madeira citrine after the color of the wine.

    Citrine crystals can form together with amethyst to form ametrine, or with smoky quartz to form bicolored quartz. Citrine is generally less expensive than amethyst, and is also available in a wide range of calibrated sizes and shapes, including very large sizes. Considered an alternative to topaz as the birthstone for November, it is also thought to be the traditional gift for couples celebrating their 13 th and 17 th wedding anniversaries. Citrine ranks a 7.0 on the Mohs Scale, and because of this durability, it is ideal for jewelry wear.

    Citrine is found in volcanic rocks and quartz veins and owes its color to the presence of iron. Most citrine is mined in Brazil, but almost all of the Brazilian material is heat-treated amethyst. Supplies are most plentiful in the Brazilian state of Rio Grande do Sul, particularly from the Serra Mine. The Ira' Mine also produces large quantities of the gem. Citrine can also be found in the Ural Mountains of Russia, in Dauphine, France, and in Madagascar.

    In ancient times, citrine was carried as a protection against snake venom and evil thoughts. It was thought to give calmness and mental balance to its wearer. Throughout history, people have confused citrine for topaz. Many citrines were sold as topaz and thus thought to carry the same qualities, such as knowledge and beauty. Today, citrine symbolizes truth and integrity, and is believed to promote creativity and personal clarity. It is also believed to impart happiness and cheer to its wearer while raising self esteem, as well as cleanse, regenerate and attract abundance.

    Iolite
    Iolite gets its name from its sensational color, using the Greek words ios (violet) and lithos (stone). The stone, often referred to as water sapphire, cordierite or dichroite, was used by the Vikings as a navigational tool and came to be known as “Vikings’ Compass.” When Viking explorers ventured far into the Atlantic Ocean, away from any coastline that could help them determine position, they were able to navigate safely by looking through iolite lenses that allowed them to find the exact position of the sun.

    The property that made iolite so valuable to the Vikings was the gem’s pleochroic property, which is the display of different colors when viewed from different directions (like a modern-day polarized filter used in sunglasses). A cube cut from iolite will look violet-blue from one side, clear as water from the other and honey yellow from the top.

    Pleochroism may have been helpful in navigation, but it makes a gem cutter’s job quite difficult. If iolite is not cut from exactly the right direction, its color will not show to its best advantage. When cut properly, the stone is usually a violet blue and can be obtained in sizes up to 5.00 carats relatively easily. Iolite ranks a 7.0-7.5 on the Mohs Scale and is readily available and affordable. Today, it is mined in Brazil, India, Mozambique, Sri Lanka and Zimbabwe. The Vikings probably mined iolite from deposits in Norway and Greenland.

    Traditionally given as a 21 st anniversary gift, iolite is thought to bring harmony to relationships. It is also said to balance the masculine and feminine aspects of one’s own character, bringing harmony and enabling that person to enjoy each moment. Iolite is believed to heighten psychic abilities by aiding and encouraging people along their spiritual paths. It is said to enhance curiosity and achievement, and aid in money management. Iolite is also believed to possess the power to guide lost sailors to the brilliance of the sun, so that they may find their way home.

    Rhodolite:
    Often referred to as the “Queen of Garnets,” rhodolite is the violet-red variety of the garnet family. Its most prized color is a beautiful raspberry, but the gem can also be found in shades of pink, red and wine. The name is derived from the Greek words “rhodon” and “lithos,” meaning rose-stone, which connects the gemstone today with the raspberry-pink flower known as the rhododendron.

    Rhodolite is a combination of almandine and pyrope garnets. Although it is occasionally found in volcanic rock, the stone is most often found in alluvial deposits in the form of water-worn pebbles. For this reason, large solitaires weighing 5.00ct or more are seldom seen at retail. Most rhodolite is mined in Sri Lanka, Tanzania and Zimbabwe. It ranks a 7.5 on the Mohs Scale and is ideal for jewelry.

    The ancients wore rhodolites as amulets for protection from injury or death in battles. Modern folklore says rhodolite can help one understand dreams, as well as bring about love and devotion when given as a gift.

    Topaz:
    A symbol of strength and intelligence, topaz derives its name from Topazios, an island in the Red Sea that is known today as Zabargad. The Greek word “topazios” means “to seek,” since the island was covered with a thick fog and difficult to find. Gemstones found on the island were called topaz, although the stones were eventually found to actually be peridot. The real gem of topaz is found throughout the world, with different occurrences producing specific colors.

    Brown, yellow, orange and red topaz are found in Brazil, Sri Lanka and Siberia. Most brownish topaz is heated to produce a permanent and glamorous pink color. Following the discovery of pink topaz in Russia during the 19th century, Imperial topaz was found. Featuring a sherry red, deep pink or reddish-orange color, the gem was so coveted that its ownership was restricted to the Czar, his family and those who received it as a royal gift. Today, Imperial shades are the most rare and, therefore, the most valuable.

    Blue topaz is rarely found in nature and is most often created through a combination of heat treatment and irradiation. It is found in Brazil, Sri Lanka, Nigeria and China. Topaz is often colorless, too, and can be found in the United States, Mexico, Russia and Pakistan. In 1998, a new type of enhanced topaz made its appearance with a greenish-blue or emerald green color. All colors of topaz rank an 8.0 on the Mohs Scale of hardness.

    Yellow topaz is November’s birthstone and blue topaz is December’s birthstone. Blue topaz is also the traditional gift for 4th and 19th wedding anniversaries, while Imperial topaz is celebrated as a 23rd anniversary gift. Perhaps the most famous topaz is a large, colorless stone known as the Braganza. It was discovered in Brazil in 1740 and was originally thought to be a priceless diamond. Today, the giant 1,680.00ct stone is set in the Portuguese Crown.

    Paraiba color topaz is vibrant greenish blue designed to resemble the rare Paraiba tourmaline gemstone from Brazil. Typically, a blue or colorless topaz is heat treated to create the intense and desirable Paraiba color. White (or colorless) topaz is a budget-friendly alternative to diamonds.

    The mystery and allure of topaz goes back thousands of years. To the ancients, it was a symbol of love and affection and was thought to ward off sudden death. The Romans associated topaz with Jupiter, the god of the sun. The Greeks called it the Stone of Strength, believing it had the power to increase strength and make its wearer invisible in times of emergency. The Egyptians said the gem was colored with the golden glow of the sun god, Ra, making topaz a powerful amulet that protected its wearer against harm.

    Topaz' mystical curative powers were believed to wax and wane with the phases of the moon. The gem was said to change color in the presence of poisoned food or drink and falcons were carved on the stones to help earn the goodwill of kings and magnates.

    Today, topaz is said to be the gem that has the widest range of curative powers. It is believed to dispel enchantment and protect against negative emotions such as anger, fear, greed and envy. Its properties are supposedly enhanced when the gem is mounted in gold. Because of this association with gold, topaz is used to bring or enhance the wearer's money-gathering abilities and has long been used in money and wealth rituals.

    Wearing topaz is said to improve and deepen relationships, promote patience, ensure fidelity and enhance the ability to love. The gem is also believed to bring friendship, intelligence, long life, beauty and a pleasant disposition.

    Tourmaline:
    Tourmaline occurs in virtually every color of the spectrum, with an unlimited range of solid and mixed colors in all imaginable shades. According to an ancient Egyptian legend, this is the result of the gemstone traveling along a rainbow from the Earth's heart, up to the sun. On its journey, the legend says that tourmaline collected all the colors of the rainbow, which is why it is called the "Rainbow Gemstone."

    The gem is found in hues of red, pink, green, blue, yellow, black, brown and colorless. It also can be bi-colored or multi-colored. Some tourmalines are very faint in color, while others are so dark that the color is only discernible when light is shone through the stone. There are even tourmalines that change their color from daylight to artificial light.

    Tourmalines displaying just one color are quite rare since one crystal usually shows two or more shades or colors. In fact, the name "tourmaline" has been derived from the Singhalese expression "tura mali," which translates to "stone of mixed colors." Even two stones cut from the same rough mother crystal will often show different colors, a characteristic that makes tourmalines so attractive and sought-after.

    Tourmaline also shows a remarkable dichroism. This means that when viewed from different directions, the stone will display different colors, or at least show different intensities. The deepest color always appears along the main axis, a fact that is important for the gem cutter to focus upon when cutting the stone. Tourmalines rank a hardness of 7.0-7.5 on the Mohs Scale and may be as small as a knitting needle or as thick as a thigh. They are easily available in sizes of up to 5.00ct.

    Different shades of colored tourmalines have been assigned specific names in the gemstone world. Bi-colored and multi-colored tourmalines have several names for the common combinations of colors. Crystals with red or pink cores and green borders are called watermelon-tourmalines. Stones with colorless crystals and black tips are called Maur's Head or Moor's Head, while colorless crystals with red tips are called Turk's Head. If the color zones are arranged one on top of the other, the stone is considered a rainbow tourmaline.

    The red variety of tourmaline changes its name based on the coloring in different types of lighting. Deep red tourmaline named rubellite shows the same fine ruby-red shade in daylight and in artificial light. Should the color change when the source of light changes, the stone is simply called a pink tourmaline. With its exquisitely intense coloring, rubellite was once the victim of misidentification for rubies in the Russian crown jewels.

    Green tourmalines come in a variety of shades, including leek-green, intense yellow-green, olive-green and brownish-green. Chromium-tourmaline is the trade name for the emerald-green variety. Its beautiful color is strikingly similar to the fine color of emeralds. Blue-green and dark bottle-green are the most rare and highly coveted green hues.

    Perhaps the most beautiful variety is the Paraiba tourmaline. It ranges in color from electric blue to neon blue-green to sizzling turquoise. Discovered in the Brazilian state of Paraiba, its vivid color has not been consistently seen in any other gemstone variety. Its spectacular color is due to the presence of a small amount of copper. A study by the German Foundation for Gemstone Research also discovered a surprisingly high content of gold in the stones.

    Until recently, there was one striking gap in the range of colors displayed by tourmaline. Pure yellow shades were missing and most of the yellow tourmalines that were found showed a slightly brownish tinge. In the year 2000, however, electric yellow tourmalines were found in Malawi in East Africa. With a clear and pure color, they were deemed "canary tourmalines" and the formerly missing color of yellow was added in excellent quality to the unlimited range of tourmaline colors.

    Larger yellow tourmalines rarely occur. Only 10 percent of all the mined yellow stones are gem-quality and when cut, more than 95 percent of the harvest will weigh less than 1.00ct. Regardless of their smaller size, experienced cutters love working with the stones. Not only do they have brilliant color, yellow tourmalines are considered to be the only gemstones that have a fine scent. This is because in the place of their occurrence, tourmaline crystals are often embedded into black material that must be removed before the stones are cut. An owner of a Malawi gemstone mine discovered the black matter was easily removed when the rough crystals were boiled in water and lemon juice. Ever since then, yellow tourmalines from Malawi not only resemble fresh lemons in color, but also in their scent before they are cut.

    Other tourmalines are called "indigolith" if they are blue and "dravite" if they are golden to dark brown. Black tourmalines are known as "schorls" and are mainly used for engraving. Although they were used as mourning jewelry, ancients believed black tourmalines to be stones that protected against negativity and strengthened the heart.

    Tourmalines are piezoelectric, meaning they can generate electrical charges when heated, compressed or vibrated. They then become polarized crystalline magnets and can attract light objects. The Dutch knew about this effect and used heated tourmalines to extract ashes from their pipes. The stones were even favorite toys of Dutch children before their gem quality was established. Because the gem's electrical charges attract dust and small materials, some believe that wearing pink tourmalines will attract love and green ones will attract success.

    Tourmaline has often been called the "muses' stone" because it is believed that its imaginative colors contain inspirational powers that grant enlightenment, enable creativity and express an artist's mood. Due to the stones' energetic conductivity and vast array of elements, they are thought to have powerful healing abilities and protect against many dangers. Tourmaline is supposed to be an especially powerful influence on love and friendship, fostering compassion and cool headedness. It is considered the traditional gift to give couples celebrating their 8th wedding anniversary.

    Ever since the ancient days, the gem has been attributed with magical powers. Today, specific colors of tourmaline are thought to hold individualized powers. Black is believed to bring luck and happiness when rubbed. Green is said to encourage communication and bring success, while blue is a balancer that stimulates other tourmalines' effectiveness. Watermelon tourmaline is believed to increase perception and creativity, while balancing passivity and aggressiveness. Pink is thought to promote peace, increase spiritual understanding and bring forth love and friendship.

    Earring Back Types


    The backing is an important part of an earring, providing a secure closure and comfortable fit. Keep in mind, some earring styles work better with certain back types. Experiment with the different types to find the best fit for you!

    Butterfly Back: A double looped piece resembling a butterfly that fits over a post. Variations on this design are called push back clasps. The basic post and butterfly back are usually used for stud earrings and lighter weight drop earrings.

    Hinged Snap Backs: This clasp features a hinged post that snaps into a groove on the back of the earring. It is commonly found on hoops. Sometimes the hinged post is curved to provide more room to fit around the ear, sometimes called a saddleback.

    Hook Backs: This earring backing is simply a long, bent post that fits through the piercing. Hooks have several variations, most notably the shepherd's hook and the French hook. While thin wire hooks reduce the weight of long earrings, making them more comfortable, they aren't as secure as other clasp styles.

    Lever Back: A hinged lever snaps shut against the curved post to form a closed loop around the ear lobe. This clasp is very secure and good for large or medium sized styles that drop just below the ear.

    Omega: Also called French clips, this clasp has a straight post and a looped lever. The hinged lever closes around the post and is held against the ear with pressure. The omega clasp is the most secure clasp, especially for the larger, heavier earrings.

    Screw back: This backing is a slight variation of the standard post and butterfly nut back. Instead of pushing on the back, the nut twists onto the threaded post. A screw back post design is often preferred for expensive diamond stud earrings that require increased security.