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      Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic . At room temperature and pressure,another solid form of carbon known as graphite is the chemically stable form, but diamond almost never converts to it. Diamond has the highest hardness and thermal conductivity of any natural material, properties that are utilized in major

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      China Synthetic Diamond Manufacturing, China Synthetic Diamond Manufacturing Suppliers and Manufacturers Directory Source a Large Selection of Synthetic Diamond Manufacturing Products at rough diamonds ,diamond watch suppliers ,natural diamond from China Alibaba

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      Man made diamonds are lab grown. Like a diamond from the earth, they are pure carbon. And they are brilliant. No longer are mined diamonds the only choice for engagement rings and fine jewelry. Eco/ethical concerns, coupled with technology advances, have made alternatives not just acceptable, but preferred.

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      In 2018, China’s jewellery retail sales from businesses above a certain designated scale totalled RMB319.0 billion, up 7.4% from the previous year. Gold consumption in China amounted to 1,151 tons, making the country the world’s leading gold consumer for the sixth year running. China is now the world’s second largest diamond consumer. The country’s demand for diamond jewellery is

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      Yellow Sapphires : 10 Things To Consider Before You Buy

      Yellow Sapphires : 10 Things You Need To Know Before You Buy. Their popularity as engagement rings has grown in recent years, due to celebrity’s yellow diamond engagement rings. Many brides love the color of yellow diamonds but not the heavy price-tag. (specifically yellow ones) for good luck and good energy. Choose Happy. Bright and

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      Diamond Quality Factors Gemological Institute Of America

      ColorClarityCutCarat WeightSubtle differences in color can dramatically af­fect diamond value. Two diamonds of the same clarity, weight, and cut can differ in value based on color alone. Even the slightest hint of color can make a dramatic difference in value. Diamonds come in many colors. Diamonds that range from colorless to light yellow and brown fall within the normal color range. Within that range, colorless diamonds are the most rare, so they’re the most valuable. They set the standard for grading and pricing oth...

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      China Rvd Green Synthetic Single Crystal Diamond Grit, Find details about China Diamond Abrasive, Industrial Diamond from Rvd Green Synthetic Single Crystal Diamond Grit

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      Ruby Wikipedia

      A ruby is a pink to blood-red colored gemstone, a variety of the mineral corundum (aluminium oxide).Other varieties of gem-quality corundum are called sapphires.Ruby is one of the traditional cardinal gems, together with amethyst, sapphire, emerald, and diamond. The word ruby comes from ruber, Latin for red. The color of a ruby is due to the element chromium.

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      The Oval shape CZ is brilliance and sparkle synthetic gemstones.It's usually used by jewelry setting.The yellow oval cut cubic zirconia gemstones are popular and best sell in today's gemstone market. Many manufacturers opt for golden yellow CZ stones to their earrings, pendants and necklaces.

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      Diamond: A gem mineral with properties for industrial use

      Diamond Crystal: A gem-quality diamond crystal in the rock in which it was formed. It is an octahedral crystal with triangular dissolution features on its surface and an estimated weight of about 1.5 carats. From the Udachnaya Mine, Yakutia, Siberia, Russia.

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      Alibaba offers 18,135 rough diamonds products. About 31% of these are loose diamonds, 17% are loose gemstone, and 13% are abrasives. A wide variety of rough diamonds options are available to you, such as d, e, and f.

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      Leibish & Co. specializes in Natural Fancy Yellow Diamonds & Yellow Diamond Jewelry. Discover our collection of fancy color diamonds. Fair Good Very Good Excellent. Symmetry: Fair Good Very Good Excellent. Fancy Light Yellow, Cushion Shape, VVS2 Clarity, GIA. $11,875.

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      Diamond is the transparent, gemstone-quality crystalline form of carbon and it is indeed the hardest-known natural substance on Earth. Diamonds are not only prized and famed for their exceptional hardness, but also for their high refractive index (brilliance) and their remarkably high dispersion rate of visible light (fire). Although traditional colorless or 'white diamonds' are by far the

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      Diamond: The mineral Diamond information and pictures

      The most notable use of Diamonds is in the jewelry market. Due to the brilliance, hardness, and rarity of Diamond, it is the most famous of all gemstones. Colorless Diamonds are most often used in jewelry, although recently yellow and brown gems have picked up in popularity.Colored Diamonds such as blue, red, green, pink, and purple, are known as Fancies, and are extremely rare and command

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      True Hearts™ HEARTS AND ARROWS DIAMONDS Our True Hearts™ Hearts and Arrows diamonds are the ultimate in perfect cut and symmetry and have thus become a symbol of the purest expression of love. Every diamond from our True Hearts™ loose diamonds collection is an ideal-cut diamond perfect in its symmetry; a lasting masterpiece with superb color, dazzling clarity and exquisite shape.

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      An Introduction to Synthetic Gem Materials

      A synthetic gem material is one that is made in a laboratory, but which shares virtually all chemical, optical, and physical characteristics of its natural mineral counterpart, though in some cases, namely synthetic turquoise and synthetic opal, additional compounds can be present.

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      Diamond Age This colorless synthetic diamond from Apollo

      May 27, 2006· This colorless synthetic diamond from Apollo Diamond may pose a bit of a challenge to the African warlords and the De Beers cartel. This diamond has the same atomic structure as a mined diamond, and is therefore optically, chemically and physically identical. But Apollo plans to get the cost down to $10/carat with high volume manufacturing.

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      Get the best deal for Loose Synthetic Moissanites from the largest online selection at eBay. Browse your favorite brands affordable prices free shipping on many items.

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      Diamond Age This colorless synthetic diamond from Apollo

      May 27, 2006· Diamond Age This colorless synthetic diamond from Apollo Diamond may pose a bit of a challenge to the African warlords and the De Beers cartel.. This diamond has the same atomic structure as a mined diamond, and is therefore optically, chemically and physically identical.

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      Natural Sapphire Prices

      Material of good color that is not sufficiently transparent to cut in facets is used to create the domed shape known as cabochon (or cab for short). These are most often found in blue and green, and they are often available in sizes up to 10 or 20 carats.

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      Buy loose diamonds online from 77 Diamonds choosing from 80% of the world's diamond market. All diamonds are independently certificated for your peace of

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      NATURAL AFRICAN AMETHYST GENUINE AFRICAN AMETHYST. Amethyst, the rich purple variety of quartz, was once so rare that it was classified as one of the precious gems.. COLOR: Natural African Amethyst is purple gem from light purple to intense royal purple mauve and violet. ORIGIN: The large deposits of amethyst were discovered in Brazil in the 19th century.

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      Shop ethical, high-quality & handmade lab grown diamond alternative jewelry that costs up to 80% less than mined diamonds. Enjoy free shipping & returns!

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      Loose Sapphires for Sale GemsNY

      We offer a wide collection of loose sapphires for sale online, including ceylon, star and padparadscha sapphires and more. yellow, pink, purple and orange. we do not deal in synthetic or lab-created stones. GemsNY is able to offer high quality loose sapphires at affordable prices because we are a wholesale dealer in sapphires and many

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      synthetic sapphire glass synthetic sapphire glass Alibaba offers 1168 synthetic sapphire glass products. About 6% of these are Lenses. A wide variety of synthetic sapphire glass options are available to you such as structure shape and material. Get Price; crystal durability forums.watchuseek

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      Authentic Gem Imports Crystal Opal Pear Shaped 0.18

      Choose this exquisite 0.18 ct Pear Shaped Crystal Opal (AOP 245C) to create the perfect piece of jewelry. Direct from manufacturer, no middlemen or markups. Visit our Dallas showroom today to view and select in person.

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      What is corundum and what are its basic qualities?

      What is Corundum and What are its Basic Qualities? Corundum is an aluminum oxide that commonly forms hexagonal barrel-shaped prisms that taper at both ends or as thin tabular hexagonal plates. It has a hardness of 9 on the Mohs scale, making it one of the most durable commercial gemstones.

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      Ruby: The gemstone Ruby information and pictures

      Ruby is distinguished for its bright red color, being the most famed and fabled red gemstone. Beside for its bright color, it is a most desirable gem due to its hardness, durability, luster, and rarity.Transparent rubies of large sizes are even rarer than Diamonds. Ruby is the red variety of the mineral Corundum. Sapphire, the other gem variety of Corundum, encompasses all colors of Corundum

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      Diamond: Mineral information, data and localities.

      Diamond material unsuitable for gems because of its shape, size, or color and because of flaws or inclusions. It also occurs in finely crystalline aggregates and is usually crushed into finer material. Carbonado: A massive, opaque, gray, brown, or black variety of diamond used as an abrasive and in rock drills. Nano-Polycrystalline Diamond

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      Sapphire Prices: Prices for Buying Natural Sapphire

      How much is a good sapphire? Depending on color, grade and carat weight, learn how natural sapphires are priced in today's gem and jewelry buying market GemSelect Material of good color that is not sufficiently transparent to cut in facets is used to create the domed shape known as cabochon (or cab for short). Here in Thailand, we see

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      Loose Sapphires for Sale GemsNY

      We offer a wide collection of loose sapphires for sale online, including ceylon, star and padparadscha sapphires and more. yellow, pink, purple and orange. we do not deal in synthetic or lab-created stones. GemsNY is able to offer high quality loose sapphires at affordable prices because we are a wholesale dealer in sapphires and many

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      What is Corundum and What are its Basic Qualities?

      What is Corundum and What are its Basic Qualities? Corundum is an aluminum oxide that commonly forms hexagonal barrel-shaped prisms that taper at both ends or as thin tabular hexagonal plates. It has a hardness of 9 on the Mohs scale, making it one of the most durable commercial gemstones.

    • ruby: the gemstone ruby information and pictures

      Ruby: The gemstone Ruby information and pictures

      Ruby is distinguished for its bright red color, being the most famed and fabled red gemstone. Beside for its bright color, it is a most desirable gem due to its hardness, durability, luster, and rarity.Transparent rubies of large sizes are even rarer than Diamonds. Ruby is the red variety of the mineral Corundum. Sapphire, the other gem variety of Corundum, encompasses all colors of Corundum

    • diamond: mineral information, data and localities.

      Diamond: Mineral information, data and localities.

      Diamond material unsuitable for gems because of its shape, size, or color and because of flaws or inclusions. It also occurs in finely crystalline aggregates and is usually crushed into finer material. Carbonado: A massive, opaque, gray, brown, or black variety of diamond used as an abrasive and in rock drills. Nano-Polycrystalline Diamond

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      Synthetic Gemstone Guide International Gem Society

      Editor’s Note: Many gemstones can be created in the laboratory and have a longer manufacturing history than diamond. This synthetic gemstone guide covers rubies, sapphires, emeralds, opals, and many more species and explains their fabrication processes.This five-part series of articles, “Understanding Gem Synthetics, Treatments, and Imitations,” is a chapter from Dr. Joel Arem’s

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      Choose this exquisite 0.18 ct Pear Shaped Crystal Opal (AOP 245C) to create the perfect piece of jewelry. Direct from manufacturer, no middlemen or markups. Visit our Dallas showroom today to view and select in person.

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      Source quality products Made in China. Find reliable China Suppliers, Manufacturers, Wholesalers & Exporters. Enjoy excellent buyer service with Made-in-China.

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      Ruby Value, Price, and Jewelry Information International

      Thai or Siamese: dark red to brownish or purplish red. The term “star ruby,” in addition to referring to rubies that display asterism, many also refer to transparent red corundum too light or too purple to properly call ruby. In the 1950s, synthetic star corundums known under the trade name “Linde Stars” enjoyed considerable popularity.

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      Buy Beautiful precious stones and semi precious stones online at GemPundit India's leading Gemstones Store for natural, unheated and untreated lab certify stones. We provide loose gemstones, gemstone rings, gemstone pendants, and more! Available with Cash on Delivery!

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      Learn All about 3 Carat Diamond Prices Diamond Registry

      The gold color will make the diamond look more yellow. However, if you personally favour yellow gold for your ring, creating the setting with two tones is an option. By making the basket of the ring in white gold can prevent the diamond from looking yellow due to the reflections. Are custom 3 carat diamond jewelry more expensive?

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