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Loose Lab grown Created Synthetic Diamonds CVD or HPHT Diamonds Gemstones Wholesale from China Suppliers and Manufacturer What's Synthetic diamond? A synthetic diamond (also known as a laboratory-grown diamond, a cultured diamond, or a cultivated diamond) is a diamond produced by a controlled process, as contrasted with a natural diamond created by geological processes or an imitation diamond made of non-diamond material that appears similar to a diamond. Synthetic diamond is also widely known as HPHT diamond or CVD diamond, after the two common production methods (referring to the high-pressure high-temperature and chemical vapor deposition crystal formation methods, respectively). While the term synthetic may sometimes be associated by consumers with imitation products, synthetic diamonds are made of the same material as natural diamonds—pure carbon, crystallized in an isotropic 3D form. What Are CVD Diamonds? A CVD or Chemical Vapor Deposition Diamond, also referred as a laboratory-created Diamond, is produced by means of a synthetic method, as compared to real or Natural Diamonds, which are generated by physical processes. In addition, CVD Diamonds started appearing in the gemstone Diamond market many years ago. This process involved bringing a gas like methane into a vacuum chamber and then activating and breaking down the molecules of the gas with microwaves, which causes the carbon atoms to accumulate on a substrate like the way snowflakes accumulate in a snowfall. What are the Methods to create the CVD Diamonds? There are now mainly two methods of manufacturing CVD Diamonds, the first is the HPHT or High Pressure High Temperature process and the other is CVD or Chemical Vapor Deposition. The HPHT method was used to successfully grow Diamonds in 1956 by General Electric, and basically mimics the natural process. The HPHT process and the energy and equipment needed is costly and produces Diamonds with mostly...

Loose Spinel Gemstones: Aquamarine,London blue, Tourmaline Green gemstones wholesale from China Supplier What's Synthetic Spinel? A: Although not as widely used today as synthetic Corundum, synthetic Spinel is still one of the most common man-made gem materials, particularly blue synthetic Spinel. It appears frequently in class rings and costume jewelry. Blue, green and other colors of synthetic Spinel are mostly manufactured using the inexpensive flame-fusion method by which the Spinel develops around an elongated boule. These flame-fusion Spinels can be distinguished from natural Spinels by a slightly elevated refractive index due to a chemical variation involving higher aluminum content. Blue synthetic Spinels of the flame-fusion type are typically colored only by cobalt. No iron is added, and therefore they are diamagnetic, another property that distinguishes blue flame-fusion Spinels from blue natural Spinels. When viewed under the Chelsea filter and also under long wave UV light, the light blue and medium blue gems pictured below left and center show a pale pink reaction due to low cobalt content, while the dark blue gem on the right appears bright red due to much higher cobalt content. None of the synthetic Spinels shown below contain enough cobalt to cause magnetic attraction. Blue Spinel gemstones manufactured by the slower and more costly flux-grown method have a vivid blue color due to high cobalt content. They are generally small in size, faceted from small synthetic crystals that are shaped like natural octahedral Spinel crystals, as opposed to the large rounded boule shapes of flame-fusion Spinels. Because the major chemistry is the same as natural Spinel, the refractive index range is also the same. While the common flame-fusion synthetic blue Spinels are almost always diamagnetic, flux-grown blue Spinels are weakly magnetic due to their higher cobalt content. This is the only gem material of any kind...

HARDEN GLASS GEMSTONES COLOR CHART Transparent Series(Colors Under LED light) Opaque Series(Colors Under LED light) HD Picuture of Opaque Series Glass Color book(Google ablum): https://photos.app.goo.gl/hgSxVvoKFLFfpqPU8 Glass Gemstones Popular Colors: Glass Popular colors Sample kits/Box (6mm round) for Sale: $10 For more pictures of the stones in this Box, please refer to the Google album. (Click this picture to the link) Video of Shanghai Glass Color book (3 pages inside) HD Picuture of Shanghai Glass Color book(Google ablum): https://photos.app.goo.gl/kGvwXduXMp6LfTjh9 There're another version of Glass Gemstones color chart. (Transparent Series) (The rough is produced by another rough manufacturer) Page 01 Page 02 Page 03   What is Hardened Glass Gemstone?A: Glass is an amorphous form of silica (with various percentages of additives) that has been used as a gemstone for millennia. Clear glass for gems is man-made, formed by fusing silica sand with various additives at temperatures of 1000+°C.Natural glasses include obsidian, which is is a rapidly quenched lava, and closer to pure silica glasses, such as libyan desert glass.A unique man-made glass, although not often used in gems for obious reasons, is trinitite, a mildly radioactive glass formed from the fusing of sand by the detonation of the first atomic bomb in 1945.Common glass has poor dispersion and refractive index, however it is very cheap to manufacture and is known in jewellery terms as paste - often backed with metal foils to increase brilliance. Hardened Gemstones is the best stimulant for the CZ Stones, which the colors are beautiful, but are cheap for the Jewelry designs. Contact us for the further information if you have questions.

NANO CRYSTAL STONES COLOR CHART Colors Under LED light （6mm Round faceted Gemstones ) Colors Under Daylight: To check the colors more clearly, you can watch this HD video of the following: These 2 pictures (Nano Popular colors) above are the screenshot of the following color chart. Nano Popular colors, Corundum, Spinel Colors - Color Chart For Sell This color chart set with the Popular colors of Nano Crystal stones, Corundum, spinel gemstones,It's made of Acrylic, set with the real 6mm round colored gemstones in it. You can buy it if you're interested in it. The Unit price of it is US$80. There's another Color Book which contains all color shades of Nano Gemstones. (Color shades: Light, Medium and dark)Total 11 pages. The price of a book is $450. (Click the following image to view the pictures in large pixel /more clearly in Google Album. ) (Click the following image to view the pictures of each color in large pixel /more clearly in Google Album Spreadsheet/Excel sheet, Have to contact Sales to get the Passcode to view this sheet/pictures. ) What's NANO Crystal stones? Nanogem - is the glass-ceramic material with nano sized (10⁻⁹m) crystals of Spinel in an aluminosilicate glass matrix, which is not special glass and it is not synthetic crystal or mineral - it is their hybrid. This composite material has unique physical and optical properties: Color (homogeneous and even), Density (3-3.3g/cm³), Luster (RI=1.61-1.64); Melting temperature (more than 1650 C°) and high thermal shock resistance make this material ideally compatible with the wax-casting technology. Thanks to these properties, all produced types of stones — transparent, translucent and opaque ones completely replicate Brightness, Color and Density of gemstones — in more than 350 colors and shades available: Emerald, Sapphire, Ruby, Garnet, Topaz, Aquamarine, Amethyst, Morganite, Kunzite, Peridot, Tsavorite,...

Understanding the moissanite carat weight: The industry has traditionally measured a diamond's weight in carats (1 carat equaling 200 milligrams). Since moissanite gemstones are only slightly less heavy (lighter) than natural diamonds, the size of a natural diamond and moissanite don't differ. For instance: A 6.50 mm round brilliant natural diamond would have a carat weight of 1.0. A moissanite of the same dimension (6.50mm) would have a carat weight of 0.88. Simply put, the weight of the two stones may be slightly different, but the millimeter size has been cut to stay the same. In order to fit available settings, it's often easier for jewelers to order moissanite by millimeter. The specific gravity of moissanite is 3.21 grams per cubic centimeter, so a 6.50 mm round brilliant moissanite jewel is approximately 0.88 carats. And we usually make all the loose gemstones in mm size, so, please kindly refer to this CT weight MM Chart to fit your jewelry desgins. Diamond Carat weight MM Size Chart   Other Customized shapes and sizes are welcome. Please contact our Sales for help or get free quotation.   Moissanite Popular Shapes/Cuts: For more details about the Loose Moissanite Diamond Gemstones, please click this link to learn more. https://www.frgems.com/loose-moissanite-gemstone-suppliers And feel free to Contact us for help if you have questions/requirements.

Loose Gemstone Popular Shapes and Regular Sizes chart Attention: Green Color filled items: Irregular size The sizes listed are not all applied to all the stones, for some of stones (Different materials) are not able to make. Please wait for the Embedded PDF File loading, if couldn't see it, please kindly refresh this page. Thanks. Here Total 4 pages: Next page and Previous page. 👇👇👇   Other Customized shapes and sizes are welcome. Please contact our Sales for help or get free quotation.

Loose Cubic Zirconia Amethyst Color #CZ10 Round Shape 6mm diamond faceted cut stones Pictures   What is Cubic Zirconia? A: Cubic Zirconia (or CZ) is zirconium oxide (ZrO2 ), is widely synthesized for use as a diamond simulant and it is a lab made created stone with a specific gravity of between 5.6-6.00 and at about 8.5 hardness on Mohs scale, which is harder than most natural gems. Its refractive index is high at 2.15 - 2.18 (B-G interval) and its luster is very good. Its dispersion is very high at 0.058 - 0.066, exceeding that of diamond (0.044). Cubic Zirconia Gemstones is the best stimulant for the Real diamond, it's beautiful and brilliant for the Jewelry designs. At FU RONG GEMS, you can Buy White and Colored CZ Loose Cubic Zirconia Stones With Quality Grades A to Top Grade Quality AAAAA at Wholesale Direct Factory prices from the Real China Professional Manufacturer and Suppliers. How Loose Cubic Zirconia Quality is Determined? A: There are four main factors that help determine the quality or grade of cubic zirconia. These are carat (or carat weight), clarity, color, and cut. CZ stones are imitation diamonds or simulants and are measured in carat weight. Loose cubic zirconia stones are always heavier than real diamonds. This is because the materials that are used to create the stones are denser. Though loose cubic zirconia stones are generally colorless, many shades of colors can be added using trace elements during the manufacturing process. These colors might include lavender, peridot, pink, violet, champagne, aqua, citrine yellow, and others. Typically, transparent cubic zirconia will be the more valuable, high-end diamond imitation. Colored CZ stones are valued according to the rarity, evenness, and tone of their colors. Clarity, or clearness, of loose cubic zirconia is also a quality factor....

SPINEL COLOR CHART What's Synthetic Spinel? Although not as widely used today as #Synthetic Corundum#, #synthetic Spinel# is still one of the most common man-made gem materials, particularly blue synthetic Spinel. It appears frequently in class rings and costume jewelry. Blue, green and other colors of synthetic Spinel are mostly manufactured using the inexpensive flame-fusion method by which the Spinel develops around an elongated boule. These flame-fusion Spinels can be distinguished from natural Spinels by a slightly elevated refractive index due to a chemical variation involving higher aluminum content. Blue synthetic Spinelsof the flame-fusion type are typically colored only by cobalt. No iron is added, and therefore they are diamagnetic, another property that distinguishes blue flame-fusion Spinels from blue natural Spinels. When viewed under the Chelsea filter and also under long wave UV light, the light blue and medium blue gems pictured below left and center show a pale pink reaction due to low cobalt content, while the dark blue gem on the right appears bright red due to much higher cobalt content. None of thesynthetic Spinelsshown below contain enough cobalt to cause magnetic attraction. Blue Spinel gemstonesmanufactured by the slower and more costly flux-grown method have a vivid blue color due to high cobalt content. They are generally small in size, faceted from small synthetic crystals that are shaped like natural octahedral Spinel crystals, as opposed to the large rounded boule shapes of flame-fusion Spinels. Because the major chemistry is the same as natural Spinel, the refractive index range is also the same. While the common flame-fusion synthetic blue Spinels are almost always diamagnetic, flux-grown blue Spinels are weakly magnetic due to their higher cobalt content. This is the only gem material of any kind that we have found that shows magnetic attraction entirely as a result of cobalt....

Dear customers, In order to make it easier for your purchase of the gemstones, please check the pictures of the stones in the following CZ color charts. and let us know the exact colors & color # when you're sending the enquiry/email. Thanks for your cooperation. There're several versions of color chart for the cubic zirconia stones. The colors of stones looks different due to the different light/environment to take these pictures. If you're not sure the colors are the ones you're looking for, it's better to buy the color charts or samples to check the colors personally. or ask our Sales to send you more pictures of the stones to check. There're Regular colors and Premium colors for the Cubic Zirconia Stones: CZ Regular colors: (CZ01 -CZ28): White, Black, Pink, Rose Pink, Golden Yellow, Canary Yellow,Lavender,Amethyst, Champagne,Orange,Violet, Garnet Red, Olive Yellow, Peridot Premium Colors: (CZ29 -CZ52): Rhodorite/Smoky,Tanzanite, Emerald Green, Aqua and Swiss Blue, Apple Green,Light Pink, Coffee Brown,Blue Zirconia, Fancy Canary Yellow, Diamond Imitated Color. And there're 3 color shades for these colors,light, Medium and Dark. Usually, the Medium color Shade are the most poplar ones. If customer doesn't request for the color shades,we are always send the stones in medium color shades, Please Attention. Besides: If you do the wax casting for the stones, Please pay attention. All CZ Regular Colors are : Heat resistant, No problem for the casting. All CZ Premium Colors are : Non-Heat resistant, Please don't do the casting. To Do the casting, please choose to use Nano Gemstones or Counrudm & Spinel Gemstones. To choose the colors you're ordering, Please refer to this latest Color chart/Sample kits/case: Loose Cubic Zirconia Color Charts: Cubic Zirconia Sample Box (6mm round) for Sale: $25 For more pictures of the stones in this Box, please refer to...