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CORUNDUM COLOR CHART 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 comesin all colours of the rainbow but is most commonly found as opaque crystals with dull colours.Red corundumis called ruby, blue corundum is called sapphire, and all other colours are called fancy sapphires. Some varieties of corundum will fluoresce under short wave and long wave UV light if there is enough chromium in the crystal structure but little iron, which tends to quench any emitted energy. Physical Properties of Corundum: Mohs Hardness: 9 Specific Gravity: 3.90 to 4.05 Cleavage Quality:None Fracture: Uneven,Conchoidal Optical Properties of Corundum: Refractive Index: 1.758 to 1.780 Optical Character: Uniaxial/- Birefringence 0.007 to 0.010 Pleochroism Dichroism: blue - violet-blue and greenish-blue; green - yellowish-green; yellow - pale yellow; purple - violet; orange, yellowish-red - deep crimson. Dispersion:0.018 Corundum and Spinel colors-6mm Round stones: Corundum and Spinel colors Sample Box for sale:6mm Round stones : $25/pc Slide Show of the Corundum Color chart 6mm round stones:   Or you can Click this picture to view the Clear pictures of Corundum Color chart 6mm round stones in Google album:   3mm Round Faceted Corundum Gemstones All colors (Google Album) Link:https://photos.app.goo.gl/TzBLy3Zs81U4unoJ7 The Popular Colors of Corundum: Pink Sapphire: 1#, 2#, #3 Ruby Red: #5, #7 and #8 Blue Sapphire: #33...

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#....

Moissanite D Color Series:

Color: D, Colorless (Supernova),

Size: 9x11mm
Clarity:VVS
Cut: Faceted Brilliant (Heart and Arrow)

MM size & Ct weight Chart: http://m.frgems.com/loose-moissanite-stones-mm-sizes-carat-weight-chart.html

Loose Lab Grown Ruby Red Color Emerald Cut 7x5mm 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 buy synthetic...

Lab Created Grown Hydrothermal Emerald Colombia Green Color Emerald cut 14x10mm gemstones Wholesale at factory direct price from China Suppliers and manufacturers. PICTURES There're 2 popular Lab grown Emerald Green Color Gemstones,One is Zambia Green, another is Colombia Green color. How can you tell a Zambian emerald? Emerald appearance is sometimes associated with its mine location. Colombian emeralds are said to have a warmer and more intense pure green color. Zambian emeralds are said to have a cooler, more bluish green color. Generally, Zambian emeralds are deep green with slight bluish overtone. ABOUT LAB HYDROTHERMAL EMERALD GREEN STONES Today you can find all sorts of Lab Created Gemstones in the market like lab created ruby, lab created sapphire, lab created Alexandrites. Out of all these Lab Created Gemstones, the Lab Created Emerald is considered to be the best discovery made by man. Not everyone can afford to wear a jewellery with real emerald stones as a top quality real emeralds can cost upto $40,000 to $100,000 a carat. But most of the people can afford to wear jewelry with synthetic emeralds in it as you can easily find a top quality lab created emerald at FU RONG GEMS for below $100. The lab created emeralds that we supply here are made by the hydrothermal process that is why some people also call it hydrothermal emerald. This process uses a water solution at high temperatures and it takes many months to create a top grade synthetic emerald rough. We then use specialist engineers to cut these stones from the roughs to get the best grade lab created emeralds. The synthetic emeralds you find here will have the same chemical composition as the real emeralds. There're other Emerald Green color stones options: Nano Crystal Emerald Green Colors Cubic Zirconia Emerald Green Colors...

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...

Moissanite D Color Series:

Color: D, Colorless (Supernova),

Size: 9x11mm
Clarity:VVS
Cut: Faceted Brilliant (Heart and Arrow)

MM size & Ct weight Chart: http://m.frgems.com/loose-moissanite-stones-mm-sizes-carat-weight-chart.html

Lab Created Grown Hydrothermal Emerald Zambia Green Color Square Shape princess cut 2x2mm gemstones Wholesale at factory direct price from China Suppliers and manufacturers. PICTURES There're 2 popular Lab grown Emerald Green Color Gemstones,One is Zambia Green, another is Colombia Green color. How can you tell a Zambian emerald? Emerald appearance is sometimes associated with its mine location. Colombian emeralds are said to have a warmer and more intense pure green color. Zambian emeralds are said to have a cooler, more bluish green color. Generally, Zambian emeralds are deep green with slight bluish overtone. ABOUT LAB HYDROTHERMAL EMERALD GREEN STONES Today you can find all sorts of Lab Created Gemstones in the market like lab created ruby, lab created sapphire, lab created Alexandrites. Out of all these Lab Created Gemstones, the Lab Created Emerald is considered to be the best discovery made by man. Not everyone can afford to wear a jewellery with real emerald stones as a top quality real emeralds can cost upto $40,000 to $100,000 a carat. But most of the people can afford to wear jewelry with synthetic emeralds in it as you can easily find a top quality lab created emerald at FU RONG GEMS for below $100. The lab created emeralds that we supply here are made by the hydrothermal process that is why some people also call it hydrothermal emerald. This process uses a water solution at high temperatures and it takes many months to create a top grade synthetic emerald rough. We then use specialist engineers to cut these stones from the roughs to get the best grade lab created emeralds. The synthetic emeralds you find here will have the same chemical composition as the real emeralds. There're other Emerald Green color stones options: Nano Crystal Emerald Green Colors Cubic Zirconia Emerald...

Lab Created Grown Hydrothermal Emerald Colombia Green Color Triangle Shape Faceted cut 5x5mm gemstones Wholesale at factory direct price from China Suppliers and manufacturers. PICTURES There're 2 popular Lab grown Emerald Green Color Gemstones,One is Zambia Green, another is Colombia Green color. How can you tell a Zambian emerald? Emerald appearance is sometimes associated with its mine location. Colombian emeralds are said to have a warmer and more intense pure green color. Zambian emeralds are said to have a cooler, more bluish green color. Generally, Zambian emeralds are deep green with slight bluish overtone. ABOUT LAB HYDROTHERMAL EMERALD GREEN STONES Today you can find all sorts of Lab Created Gemstones in the market like lab created ruby, lab created sapphire, lab created Alexandrites. Out of all these Lab Created Gemstones, the Lab Created Emerald is considered to be the best discovery made by man. Not everyone can afford to wear a jewellery with real emerald stones as a top quality real emeralds can cost upto $40,000 to $100,000 a carat. But most of the people can afford to wear jewelry with synthetic emeralds in it as you can easily find a top quality lab created emerald at FU RONG GEMS for below $100. The lab created emeralds that we supply here are made by the hydrothermal process that is why some people also call it hydrothermal emerald. This process uses a water solution at high temperatures and it takes many months to create a top grade synthetic emerald rough. We then use specialist engineers to cut these stones from the roughs to get the best grade lab created emeralds. The synthetic emeralds you find here will have the same chemical composition as the real emeralds. There're other Emerald Green color stones options: Nano Crystal Emerald Green Colors Cubic Zirconia Emerald...