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Loose Natural genuine Black sapphire Round shape faceted 2mm and 2.5mm meleegemstones Wholesale at factory direct price from China Suppliers and manufacturers. Picture   What Is Black Sapphire? Black sapphire is a nearly opaque stone whose color is so dark that it appears to absorb all light that enters the gemstone. For example, see a black sapphire ring here. Sometimes, this stone also looks very dark blue or gray. Black sapphires come mainly from Australia and are mined in large quantities. This variety of sapphire is very cheap and is considered low grade. An Alternative to Onyx? Because of its color, black sapphire is often confused with Black onyx. Indeed, this stone can successfully act as an onyx substitute. Although both stones look very similar, onyx is actually softer, while sapphire is one of the hardest gemstones (9 out of 10 on the Mohs Scale of Hardness). Because of this similarity, you may consider getting a black sapphire for your ring or pendant if you want a stone that has the color of onyx but is much harder. Is Black Sapphire the Same as Black Star Sapphire? Black star sapphire has a similar sounding name but is actually a different stone. It is a variety of the so-called “star sapphires” – stones that due to their unique crystal structures reflect light in the shape of a star. Black star sapphire is mostly mined in Thailand, West Africa and India. Should You Buy Black Sapphire? When considering black sapphire, you should keep in mind that it is deemed a low-quality stone. The good thing about it is that it’s cheap.If you are looking for a black and opaque gemstone, this is not a bad choice because sapphire is extremely hard. Whether you will decide to give black sapphire a chance comes...

Wholesale Loose nano crystal Emerald Green Dark Color #111 Rectangle Shape Princess Cut 12x10mm gemstones wholesale from china supplier and manufacturer. Pictures The following is 7x5mm Rectangle princess cut stones Rectangle shape gemstones: Usuallyrectangular cut gemstonesis with straight cornner, this loose gemstones cut demonstrates a classic elegance. Fully faceted for maximum brilliance, unlike the traditional step cut that are very transparent. Emerald Green Color is one of most popular color gemstones for jewelry setting, if you do the wax casting, Nano Emerald Green Color Gemstones is the best Choice , as it's heat resistant, withstand a high temperature. There're other popular Emerald Green color stones options: Nano Crystal Emerald Green Colors Cubic Zirconia Emerald Green Colors Glass Emerald Green Colors. Moissanite stones Green Color stones. What is Nano Gemstones ? A: Nano Crystal gemstone - 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. Nano Crystal gemstone are a new type of created gemstone made especially for jewellery. The colour is homogeneous, meaning that if you bought 100 emerald green nano crystal stones, the colour would be exactly the same in every stone. The material has been created with precious metal clay in mind, so any size gem should be kiln safe and blow torch safe with out colour change or damage. #Nano Crystal gemstone# does not contain any health hazardous contaminants (lead, arsenum, cadmium) Hardness: 7 on Mohs scale Refractive Index: 1.65-1.7 Specific Gravity: 3.5-4 Dispersion: 0.015...

Loose Nano crystal morganite Peach #180 Square Octagon Shape step Cut 9x9mm faceted cut Gemstones wholesale from china supplier and manufacturer. Pictures What is Morganite Color Gemstones? Morganite is the name of an orange to pink gemstone that has significantly grown in popularity since 2010. It is a variety of beryl, a beryllium aluminum silicate mineral with a high durability. Morganite is distinguished from other types of beryl by its orange-pink color. After Blue sapphire, morganite is the second-most-popular colored gem used as a center stone in engagement rings today. Synthetic Morganite and Imitated Morganite Synthetic Morganite (also known as lab-grown morganite or lab-created morganite) is a man-made material with the same chemical composition, crystal structure, and physical properties as natural morganite. The important difference is that natural morganite was formed in the Earth and is a rare material. On the other hand, synthetic morganite is a man-made material that can be produced upon demand in unlimited quantities. Imitation Morganite is a man-made material that simply looks like morganite. It is not rare and generally sells for a price that is much lower than natural morganite or synthetic morganite. Many people gladly purchase imitation gems because they look great and cost a fraction of what would be paid for a natural gem. (Nano Crystal stones have a imitated morganite color stones. ) Morganite's recent surge in popularity should be a caution flag for people who are buying morganite jewelry. This is the perfect time for synthetic morganite and imitation morganite to flow into the gem and jewelry market. If you are going to spend major money on an item of morganite jewelry, it is important to know if the gem you are buying is natural or man-made. Why? Natural morganite sells for a much higher price than man-made alternatives. You...

Cubic Zirconia Blue Colored Loose CZ Sapphire blue Pear Shape Faceted 3x2mm Gemstones Gemstones wholesale from China Manufacturer and Suppliers The Blue color CZ Stones: The blue color is sapphire blue color look like. It's the premium colors of CZ stones. There're 3 Color shades, Light, Medium or Dark, Pictures     At FU RONG GEMS you can buy CZ Blue Sapphire Color Loose stones at Wholesale Direct Factory prices from the Real China Professional Manufacturer and Supplier. We have quite a collection of CZ Sapphire Blue Loose Stones 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...Any Special Shape and styles are able to made.. --Low, Low Factory Prices from China Wuzhou--the Biggest Synthetic Gemstones Manufacturing Base in the World. There're several Simulated Sapphire Blue Color Synthetic gemstones options: Harden Glass Gemstones Sapphire blue color, Nano Crystal Gemstones Sapphire blue color Corundum Gemstones Sapphire blue color Lab Grown Gemstones Sapphire blue color. The Closest Color to the Natural/Genuine Blue Sapphire color gemstones are: Lab Grown>Corundum>Nano Crystal>Glass>Cubic Zirconia gemstones. 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...

Loose nano crystal Topaz Blue Color Heart shape Faceted Cut 4x4mm gemstones wholesale from china supplier and manufacturer. Pictures What Is Blue Topaz? Blue is the most popular Topaz Blue color in today’s jewelry marketplace. It is sold in a broad range of blue colors, starting from a pale blue with a light tone and saturation, all the way to a deep blue with a moderate to dark tone and saturation. Blue topaz is very attractive, inexpensive, and a favorite color of the jewelry customer. These characteristics drive the popularity of blue topaz gemstones. What is Nano Gemstones ? A: Nano Crystal gemstone - 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. Nano Crystal gemstone are a new type of created gemstone made especially for jewellery. The colour is homogeneous, meaning that if you bought 100 emerald green nano crystal stones, the colour would be exactly the same in every stone. The material has been created with precious metal clay in mind, so any size gem should be kiln safe and blow torch safe with out colour change or damage. #Nano Crystal gemstone# does not contain any health hazardous contaminants (lead, arsenum, cadmium) Hardness: 7 on Mohs scale Refractive Index: 1.65-1.7 Specific Gravity: 3.5-4 Dispersion: 0.015 Melting Point: 1700 degrees Celcius It does not change color when heated. Can be used in wax casting. The Main characteristics of Nanosital/Nano Crystal stones: 1.Nano Stone's specific gravity index is...

Loose nano crystal Ruby Red 190/3# Color Heart shape Faceted Cut 4x4mm gemstones wholesale from china supplier and manufacturer. Pictures What is Nano Gemstones ? A: Nano Crystal gemstone - 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. Nano Crystal gemstone are a new type of created gemstone made especially for jewellery. The colour is homogeneous, meaning that if you bought 100 emerald green nano crystal stones, the colour would be exactly the same in every stone. The material has been created with precious metal clay in mind, so any size gem should be kiln safe and blow torch safe with out colour change or damage. #Nano Crystal gemstone# does not contain any health hazardous contaminants (lead, arsenum, cadmium) Hardness: 7 on Mohs scale Refractive Index: 1.65-1.7 Specific Gravity: 3.5-4 Dispersion: 0.015 Melting Point: 1700 degrees Celcius It does not change color when heated. Can be used in wax casting. The Main characteristics of Nanosital/Nano Crystal stones: 1.Nano Stone's specific gravity index is very close to that of the most valuable gemstones such as topaz, sapphire, ruby and aquamarine. 2.Nano Stone and the optical properties of the most popular color gemstones are almost similar. Nano Stone's main feature is its lack of an unnaturally strong lustre, which is typical of #cubic zirconia#, wherein the play of colors remains attractive. 3.Nano Stone's hardness (7 on Mohs scale) guarantees jewellery durability without the loss of its original look. The...

Loose Blue Spinel #119 Blue Color Heart Shape Faceted Cut 5x5mm and 6x6mm Gemstones wholesale from China Supplier and manufacturers. Pictures 119# blue color stones usually used as the simulated color of Sapphire blue stones. when you're looking for a cheaper alternative blue sapphire gemstones, Spinel 119# blue color is one of best choice. 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. Comparision of Spinel and Other gemstones: The Popular colors of Spinel Stones: 104#, 105# and 106# are the simulated colors of Aquamarine, 104#Light, 105# Medium and 106# dark. 107# 108# colors are the simulated colors of Topaz Sky blue, 120# is the simulated color of Topaz London Blue. 119# is the simulated color of Topaz Swiss Blue. 112#, 113#,114# are...

Loose nano crystal Tourmaline Green Color #131 Square Step Cut 4x4mm gemstones wholesale from china supplier and manufacturer. Pictures What is Nano Gemstones ? A: Nano Crystal gemstone - 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. Nano Crystal gemstone are a new type of created gemstone made especially for jewellery. The colour is homogeneous, meaning that if you bought 100 emerald green nano crystal stones, the colour would be exactly the same in every stone. The material has been created with precious metal clay in mind, so any size gem should be kiln safe and blow torch safe with out colour change or damage. #Nano Crystal gemstone# does not contain any health hazardous contaminants (lead, arsenum, cadmium) Hardness: 7 on Mohs scale Refractive Index: 1.65-1.7 Specific Gravity: 3.5-4 Dispersion: 0.015 Melting Point: 1700 degrees Celcius It does not change color when heated. Can be used in wax casting. The Main characteristics of Nanosital/Nano Crystal stones: 1.Nano Stone's specific gravity index is very close to that of the most valuable gemstones such as topaz, sapphire, ruby and aquamarine. 2.Nano Stone and the optical properties of the most popular color gemstones are almost similar. Nano Stone's main feature is its lack of an unnaturally strong lustre, which is typical of #cubic zirconia#, wherein the play of colors remains attractive. 3.Nano Stone's hardness (7 on Mohs scale) guarantees jewellery durability without the loss of its original look. The Nanosital...

Loose Nano crystal Tourmaline Green #131 Color Round Faceted gemstones wholesale from china supplier and manufacturer. Pictures What is Nano Gemstones ? A: Nano Crystal gemstone - 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. Nano Crystal gemstone are a new type of created gemstone made especially for jewellery. The colour is homogeneous, meaning that if you bought 100 emerald green nano crystal stones, the colour would be exactly the same in every stone. The material has been created with precious metal clay in mind, so any size gem should be kiln safe and blow torch safe with out colour change or damage. #Nano Crystal gemstone# does not contain any health hazardous contaminants (lead, arsenum, cadmium) Hardness: 7 on Mohs scale Refractive Index: 1.65-1.7 Specific Gravity: 3.5-4 Dispersion: 0.015 Melting Point: 1700 degrees Celcius It does not change color when heated. Can be used in wax casting. The Main characteristics of Nanosital/Nano Crystal stones: 1.Nano Stone's specific gravity index is very close to that of the most valuable gemstones such as topaz, sapphire, ruby and aquamarine. 2.Nano Stone and the optical properties of the most popular color gemstones are almost similar. Nano Stone's main feature is its lack of an unnaturally strong lustre, which is typical of #cubic zirconia#, wherein the play of colors remains attractive. 3.Nano Stone's hardness (7 on Mohs scale) guarantees jewellery durability without the loss of its original look. The Nanosital hardness index...

Loose nano crystal Purple Amethyst Color #167/2 Round Shape Faceted Cut 2mm gemstones wholesale from china supplier and manufacturer. Pictures What is Nano Gemstones ? A: Nano Crystal gemstone - 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. Nano Crystal gemstone are a new type of created gemstone made especially for jewellery. The colour is homogeneous, meaning that if you bought 100 emerald green nano crystal stones, the colour would be exactly the same in every stone. The material has been created with precious metal clay in mind, so any size gem should be kiln safe and blow torch safe with out colour change or damage. #Nano Crystal gemstone# does not contain any health hazardous contaminants (lead, arsenum, cadmium) Hardness: 7 on Mohs scale Refractive Index: 1.65-1.7 Specific Gravity: 3.5-4 Dispersion: 0.015 Melting Point: 1700 degrees Celcius It does not change color when heated. Can be used in wax casting. The Main characteristics of Nanosital/Nano Crystal stones: 1.Nano Stone's specific gravity index is very close to that of the most valuable gemstones such as topaz, sapphire, ruby and aquamarine. 2.Nano Stone and the optical properties of the most popular color gemstones are almost similar. Nano Stone's main feature is its lack of an unnaturally strong lustre, which is typical of #cubic zirconia#, wherein the play of colors remains attractive. 3.Nano Stone's hardness (7 on Mohs scale) guarantees jewellery durability without the loss of its original look. The...