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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....

Loose Synthetic Lab Created Corundum Rose Pink sapphire 3# Pear Shape Faceted Cut 22x9mm Loose gemstones Wholesale from China Suppliers and manufacturers. --Also Called as Synthetic Pink Sapphire,Lab created Pink Sapphire.--We Supply and Manufacture Corundum Pink sapphire stones in All kinds of popular Shapes and Sizes;--Color Shades:Pink sapphire 2# (Medium), Rose Pink sapphire 3# (Dark), Pictures   What's the Pink Sapphire Color Stone? The Lab Created Pink Sapphires are the family stones of Synthetic Corundums. Lab Created Pink Sapphires are made by a method called Flame Fusion.They are made in such a way that they look like Natural gemstones. These Lab Created gemstones have the same chemical properties of the real stone,Have the same hardness, density and appearance like the Natural Pink Sapphire. Only a trained eye can tell the difference between the two. The most common Corundum colors are Blue Sapphire and Ruby color stones, but we can also supply White Sapphire, Orange Sapphire, Yellow Sapphire and Alexandrites in all shapes and sizes. We have quite a collection of Pink Sapphire Color Loose gemstones such as popular Round Brilliant Cut,Princess Cut,Emerald Cut,Cushion Cut and also unique heart, Oval,Octagon,Marquise, Pear,Star Cuts and Much More... What is Corundum and What are its Basic Qualities? A: 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. It has no dominant cleavage and fractures in a conchoidal manner. A high density of ~4.0 g/cm3 (most silicate minerals are ~2.6 g/cm3) results in corundum occurring in secondary placer deposits and recoverable by panning methods, similar to how you would recover placer gold. Corundum comes in all colours of the rainbow but is most...

Loose Natural Semi precious genuine Citrine Yellow Dark Color Round Shape Cabochon Cut 3mm Gemstones Wholesale at factory direct price from China Suppliers and manufacturers. Picture There're 3 colors shades for the Natural Citrine Yellow Color gemstones on the Market, The light, Medium and Dark. The price of Dark color shade stones are usually higher than light and medium color shade. Some information about the Natural Citrine Yellow Color Gemstones: Citrine is recognized as one of the most popular and frequently purchased yellow gemstones. Citrine is rare in nature. In the days before modern gemology, its tawny color caused it to be confused with topaz. Today, its attractive color, plus the durability and affordability it shares with most other quartzes, makes it the top-selling yellow-to-orange gem. In the contemporary market, citrine’s most popular shade is an earthy, deep, brownish or reddish orange. ​Birthstones & Anniversaries Along with topaz, citrine is a birthstone for November. It’s also recognized as the gem that commemorates the thirteenth anniversary. Where to buy Natural Citrine yellow gemstones? You're here in the right place, FU RONG GEMS supply and manufacture high quality of Natural Citrine yellow color gemstones in many kind of popular shapes/cuts. We have a quite collection of loose Semi precious NaturalCitrine yellow gemstones wholesale at factory price from China . POPULAR SHAPES AND SIZES: * Factory direct. * Strict quality control. * Large Stock. * Customized is welcome. *All Photos are 100% real shoot. Cutting provide: all kinds of Poupular shapes/cut and also can be made in custom shapes/cuts. Delivery date: 1-2 days for in stock, 7-10 days for custom orders. OUR ADVANTAGE Factory & Manufacturer since 2008, strong productive ability. Ensure the large quantity supply of product. We are one of the largest manufacturers & Suppliers of Loose gemstone in China#Wuzhou City#....

Loose Cubic Zirconia Amethyst Baguette Shape step cut 4x8mmgemstones CZ10 wholesale from China Manufacturer and Suppliers 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 gemstones#. 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 Cubic zirconia Amethyst Color stones and Other Colored CZ #Loose Cubic Zirconia Stones# With Quality Grades A to Top Grade Quality AAAAA at Wholesale Direct Factory prices from the Real China Wuzhou Professional Manufacturer and Suppliers. The definition/difference of Our CZ stone quality grades: A Quality stone: The stones is less of sparkling & brilliance. (Use the poor rough to make, The height/thickness of some stones are not reach the standard height of a diamond cut stone. And the Girdle of stones is thin or thick, not in symmetrical. So, some of stones looks Cloudy. AA Quality stones: Use the Better rough to make, The sparkling & brilliance is better than A Quality, As the cutting & faceting is better. AAA Quality (Standard) stones: Use the better rough to make,With the standard proportion of diamond cutting & faceting, calibrated in sizes & height, with symmetrical Girdle in general, Therefore, The sparkling & brilliance of stones are better than A & AA Quality. 4A Quality stones: Pick out from the 5A best quality stones....

Loose Lab Grown Ruby Pigeon Blood Red DarkColor Emerald cut 12x10mm Lab Ruby Red Gemstones wholesale from china Suppliers and Manufacturer. PICTURES * Factory direct. * Strict quality control. * Large Stock. * Customized is welcome. *All Photos are 100% real shoot. Cutting provide: all kinds of Poupular shapes/cut and also can be made in custom shapes/cuts. Delivery date: 1-2 days for in stock, 7-10 days for custom orders. VIDEO Usually, There're 2 kinds of popular Lab Grown Ruby Stones: One isHydrothermal Ruby red, the colors have are light, medium and dark shades. Another one isPulled-Czochralski Ruby Red, which the colors are usually in Dark, like the pigeon blood red color. What is Lab Grown Pulled Czoahralski RUBY? Lab Synthesized Pulled Ruby (By Czochralski Process). Pigeon blood red - the color is phenomenal! This process utilizes a ruby seed crystal and is considered one of the top methods of creating quality ruby synthetic. What is Lab Grown Hydrothermal RUBY? Another Ruby Process method is made by hydrothermal growth (newest “Platinum” technology) which is slow and only method for successfully growing synthetic ruby. This process requires heat and pressure and imitates the conditions deep in the earth that result in the formation of natural gems. Nutrients are dissolved in a water solution, and then synthetic crystals form as the solution cools to produce a ruby gemstone. The lab created ruby can also be created by flame fusion which is the Corundum, crystal pulling or flux growth method but the quality and resemblance of synthetic ruby created by hydrothermal process is considered to be the best and superior to all other lab created rubies. As It follows the same process as natural ruby is created make it the most superior among other rubies. Natural rubies are often over-valued. It is better to...

Loose Natural genuine Africa Amethyst Color Round Shape Faceted cut 5.5mm Gemstones Wholesale at factory direct price from China Suppliers and manufacturers. Picture There're 2 popular colors shades for the Natural Amethyst Color gemstones on the Market, The light, Medium to Dark. The Light color Amethyst stones are usually made of Brazil Amethyst. The Intense Darker color shade Amethyst stones are usually come from Africa Amethyst rough. Some information about the Natural Africa Color Gemstones: Amethyst is a violet colored, semi-precious gemstone of the Quartz mineral family. As an astrological substitute of Blue Sapphire, it is worn to overcome financial stress, professional instability and unhealthy addictions.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. Today the finest amethyst comes from Zambia in Africa.CHEMICAL COMPOSITION: Amethyst is a macro crystalline variety of Quartz with the chemical formula SiO2 (Silicon Dioxide). Experts attribute the purple colour of amethyst to small amounts of Iron Oxide (Fe2O3) impurities (approximately 40 parts per million) at specific sites in the crystal structure of quartz.SPECIFIC GRAVITY: 2.65 REFRACTIVE INDEX: 1.544-1.553 HARDNESS: 7 WHAT WE SUPPLY: Natural African Amethyst and Brazil Amethyst Colors ​Birthstones & Anniversaries Along with topaz, Amethyst is a birthstone for Feb. It’s also recognized as the gem that commemorates the thirteenth anniversary. Where to buy Natural Africa Amethyst Color gemstones? You're here in the right place, FU RONG GEMS supply and manufacture high quality of Natural Africa Amethyst Color gemstones and other Color Natural semi-precious Gemstones in many kind of popular shapes/cuts. We have a quite collection of loose Semi precious Natural Africa Amethyst Color gemstones wholesale at factory price from China . POPULAR SHAPES AND SIZES: * Factory direct. * Strict quality...

Lab Grown Ruby Red Color shade Round Shape Jubilee cut 10mm Gemstoneswholesale from china Suppliers and Manufacturer. * Factory direct. * Strict quality control. * Large Stock. * Customized is welcome. *All Photos are 100% real shoot. Cutting provide: all kinds of Poupular shapes/cut and also can be made in custom shapes/cuts. Delivery date: 1-2 days for in stock, 7-10 days for custom orders. Pictures What is Lab Grown RUBY? A:It's madeby Lab grown, hydrothermal growth (newest “Platinum” technology) which is slow and only method for successfully growing synthetic ruby. This process requires heat and pressure and imitates the conditions deep in the earth that result in the formation of natural gems. Nutrients are dissolved in a water solution, and then synthetic crystals form as the solution cools to produce a ruby gemstone. The lab created ruby can also be created by flame fusion, crystal pulling or flux growth method but the quality and resemblance of synthetic ruby created by hydrothermal process is considered to be the best and superior to all other lab created rubies. As It follows the same process as natural ruby is created make it the most superior among other rubies. Natural rubies are often over-valued. It is better to buy synthetic Corundum rubies or lab created rubies made by hydrothermal method as they have exact same chemical compositionand physical composition and are sold at fraction of price of natural rubies. They also appear brighter and more vivid than natural rubies making it the better than natural corundum. Color of this item is just like the Natural Burmese Ruby color. SYNTHETIC RUBY (HYDROTHERMAL) PROPERTIES- Chemical Formula-Al2O3 Hardness-9 Luster-Subadamantine To Vitreous Stability-Very Good Fracture-Conchoidal Refractive Index -1.762-1.77 Hydrothermal ruby possess very little difference when compared to natural ruby. Only when observed under high magnification microscope in labs,...

Loose Cubic Zirconia Canary Yellow Color Pear Shape Faceted Cut 13x9mm gemstones CZ06 wholesale from China Manufacturer and Suppliers Pictures Canary Yellow Diamonds and Canary Diamonds are the most common form of Colored Diamonds. Within the range of rare colored diamonds (only 1 carat out of every 10,000 carats mined is a natural fancy color diamond), the yellow diamond has gained tremendous popularity because of its beautiful shine and its relatively affordable prices. And Cubic Zirconia canary yellow colored gemstones is the best substitute for the Real Canary Yellow Diamond. 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 gemstones#. 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 Cubic zirconia Canary Yellow Color stones and Other Colored CZ #Loose Cubic Zirconia Stones# With Quality Grades A to Top Grade Quality AAAAA at Wholesale Direct Factory prices from the Real China Wuzhou Professional Manufacturer and Suppliers. CUBIC ZIRCONIA COLORS 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 (US Rough), Coffee Brown (Yellowish and Reddish),Blue Zirconia, Fancy Canary Yellow (US Rough),...

Loose Synthetic Lab Created Corundum Blue Sapphire 34# Medium Color Asscher Shape Faceted Cut 6x6mm gemstones Wholesale from China Suppliers and manufacturers. --Also Called as Synthetic Blue Sapphire,Lab created Blue Sapphire.--We Supply and Manufacture Corundum Blue sapphire stones in All kind of popular Shapes and Sizes;--Color Shades: #33 Light shade, #34 Medium and # 35 dark blue. Pictures What's the Blue Sapphire Color Stone? Blue sapphire belongs to the mineral species corundum. It can be a pure blue but ranges from greenish blue to violetish blue. The name “sapphire” can also apply to any corundum that’s not red and doesn’t qualify as ruby, another corundum variety. Sapphire is the September birthstone and for the 5th and 45th anniversary gemstone gifts. For specific birthstone information, September birthstone, Sapphire comes in all colors except red! It may be colorless, a deep blue, green, golden yellow, pink, reddish-orang, and violet. The most valuable color of sapphire is referred to as "corn-flower blue;" black, grey, or green overtones to this vivid blue will reduce overall value. Blue sapphire is not as expensive as diamond, emerald, and ruby, with the exception of the rare variety called Padparadscha, an orange-pink stone, and some Pink stones. The most common Corundum colors are Blue Sapphire and Ruby color stones, but we can also supply White Sapphire, Orange Sapphire, Yellow Sapphire and Alexandrites in all shapes and sizes. We have quite a collection of Blue Sapphire Color Loose gemstones such as popular Round Brilliant Cut,Princess Cut,Emerald Cut,Cushion Cut and also unique heart, Oval,Octagon,Marquise, Pear,Star Cuts and Much More... Special Shape and styles are available. What is Corundum and What are its Basic Qualities?A: 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...

Loose Cubic Zirconia Champagne Color Baguette Shape step cut 4x8mm gemstones CZ13 wholesale from China Manufacturer and Suppliers 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 gemstones#. 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 Cubic zirconia Amethyst Color stones and Other Colored CZ #Loose Cubic Zirconia Stones# With Quality Grades A to Top Grade Quality AAAAA at Wholesale Direct Factory prices from the Real China Wuzhou Professional Manufacturer and Suppliers. The definition/difference of Our CZ stone quality grades: A Quality stone: The stones is less of sparkling & brilliance. (Use the poor rough to make, The height/thickness of some stones are not reach the standard height of a diamond cut stone. And the Girdle of stones is thin or thick, not in symmetrical. So, some of stones looks Cloudy. AA Quality stones: Use the Better rough to make, The sparkling & brilliance is better than A Quality, As the cutting & faceting is better. AAA Quality (Standard) stones: Use the better rough to make,With the standard proportion of diamond cutting & faceting, calibrated in sizes & height, with symmetrical Girdle in general, Therefore, The sparkling & brilliance of stones are better than A & AA Quality. 4A Quality stones: Pick out from the 5A best...