Search results for “Loose CZ Stones”

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...

Synthetic Blue Sapphire Gems, Synthetic Lab Created Ruby Gems, Synthetic Alexandrite, Synthetic White Sapphire, Pink Sapphire,Synthetic Corundum Gemstones China Wholesale and Suppliers 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 commonly found as opaque crystals with dull colours. Red corundum is 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: 9Specific Gravity: 3.90 to 4.05Cleavage Quality:NoneFracture: Uneven,Conchoidal Optical Properties of Corundum:Refractive Index: 1.758 to 1.780Optical 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 Usually, There're 3 kinds of popular Corundum Stones for Jewelry use, one is Synthetic Lab Blue Sapphire, Synthetic Red Ruby, and Synthetic Lab Alexandria Gems, The following colors are the popular color of Corundum Gemstones. Slide Show of the Some Corundum Popoular Colors gemstones: Video  Popular Colors of Corundum gemstones and Spinel Gemstones Spinel Colors Corundum Colors Aquamarine 106# Pink Sapphire 2# Sky Blue 108# Pink...

Loose Nano Crystal and Nanosital gemstones wholesale from china supplier and manufacturer. What is Nano Gemstones ? A: Nanosital or 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. Nanosital or 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. Nanosital or Nano Crystal gemstone does not contain any health hazardous contaminants (lead, arsenum, cadmium) Hardness: 7 on Mohs scaleRefractive Index: 1.65-1.7Specific Gravity: 3.5-4Dispersion: 0.015Melting 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 (7) is higher than glass...

Lab Created Emerald, Hydrothermal Emerald Green Lab Grown Zambia Green and Colombia Green color Gemstones China Suppliers and Wholesale. 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. COLOR: A very fine green colour that a natural emerald would feel jealous of. CHEMICAL COMPOSITION: BeAlSiO (Beryllium Aluminium Silicate). Similar to natural Emerald. CUT: Round Brilliant Cut, Oval Brilliant Cut, Cushion Cut, Square Cut, Rectangular Octagon Cut, Marquise Cut, Trillion Cut, Heart Shape Cut, Pear Shape Cut SPECIFIC GRAVITY: 2.66-2.69 REFRACTIVE INDEX: 1.561-1.571 HARDNESS: 7-7.5 FORMATION: Hydrothermal or Flux-fusion lab process. The technique usually involves dissolving the crystal nutrients in an acidic solution of water and chemicals at high temperatures and pressures, with crystallization occurring in a cooler chamber...

Loose Moissanite Diamond D EF GH and Color Moissanite stones at highest quality Wholesale at factory direct price from China Suppliers & Manufacturer What Is Moissanite? Moissanite was first discovered in trace quantities that were carried to Earth from a spectacular meteorite. Possessing fire, brilliance, and luster far greater than that of a diamond, Moissanite stones sparkles unlike any other gemstone on earth. Composed of carbon and silicon, Moissanite is also one of the hardest and toughest known elements on earth, making it extremely resistant to scratching, chipping and breaking. Its durability and incomparable beauty make it an ideal center stone for an engagement ring or jewelry gift. Moissanite Diamonds come in many fancy shapes and sizes and can be used to create a one of a kind Moissanite Ring or used in other unique Moissanite Jewelry. Moissanite Optical Properties: Moissanite's characteristic sparkle is more than just a show of beauty - it's a testament to the superior science behind the jewel, boasting more fire, brilliance and luster than any gemstone on earth. This is not merely a sales line, but a scientific and quantifiable fact. Moissanite is known for its high refractive index of 2.65, which is notably higher than diamond, sapphire, CZ and other gemstones known to be very brilliant. Brilliance is the flashes of white light exiting the top and sides of a gemstone. The higher the refractive index of a gemstone, the more brilliance the jewel emits. Moissanite's superior refractive index makes Moissanite the most brilliant fine gemstone on earth. Moissanite's fire, the flashes of colored light, is even more impressive, being more than twice that of a diamond. Luster is the amount of light that is reflected back to the observer from the surface of the gemstone. In addition to superior fire and brilliance, Moissanite...

Loose Cubic Zirconia and Loose CZ White and Colored Gemstones Wholesale at factory prices from China Suppliers and Manufacturer. 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 7.5 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...

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....

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 Synthetic Lab Created Corundum Ruby Red #7 Color Pentagon Shape Faceted Cut 7.5x4.65mm Gemstones Wholesale from China Suppliers and manufacturers. --Also Called as Synthetic Ruby, Synthetic Red Corundum,--We Supply and Manufacture Corundum Ruby Red stones in All kinds of popular Shapes/cuts and Sizes;--Color Shades:Ruby Red 5#, Ruby Red 7# dark, Ruby Red Dark(Garnet) 8#; Pictures What's the Ruby Red Color Stone? Which colour would you spontaneously associate with love and vivacity, passion and power? It's obvious, isn't it? Red. Red is the colour of love. It radiates warmth and a strong sense of vitality. And red is also the colour of the Ruby Stones, the king of the gemstones. In the fascinating world of gemstones, the ruby red is the undisputed ruler. For thousands of years, the Ruby red Gemstones has been considered one of the most valuable gemstones on Earth. It has everything a precious stone should have: magnificent colour, excellent hardness and outstanding brilliance. In addition to that, it is an extremely rare gemstone, especially in its finer qualities. And Now you can buy Synthetic Corundum Created Ruby Color Loose gemstones with an excellent simulated of Real Ruby Gemstones at Wholesale Direct Factory prices from the Real China Professional Manufacturer and Supplier. We have quite a collection of Ruby Red 5# Color 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 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...

Lab Grown Padparadscha Sapphire Oval Shaped Faceted cut Synthetic Pink Sapphire Gemstone wholesale from china Suppliers and Manufacturer. PICTURES What's the Padparadscha Sapphire Color Stone? When it comes to the sapphire family, it’s no secret that blue sapphires often claim the spotlight. However, did you know that the padparadscha sapphire is just as dazzling and priceless as its sky-colored cousin? Named after the sacred lotus flower, padparadscha sapphires are a prized rarity in the gemstone world. With their striking shades of orange and pink, padparadscha gems are sure to take your breath away! These summer-colored stones are cherished by regular folks and royalty alike. In 2018, Princess Eugenie made headlines with her stunning padparadscha engagement ring. So, what exactly is the mysterious padparadscha sapphire, and why is it so popular among gemstone fans? In this comprehensive guide, we’ll be digging into the sunset-colored sapphire’s history, meaning, and various physical properties. We have quite a collection of PadparadschaSapphire 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... LabPadparadscha Sapphire (Pulled Czochralski) PROPERTIES： Chemical Formula:Al2O3 Hardness: 9 Luster-Subadamantine To Vitreous Stability:Very Good Fracture:Conchoidal Refractive Index:1.762-1.77 Lab Created Pulled Padparadscha Sapphire looks exactly like natural Padparadscha Sapphire. Only when observed under high magnification microscope in labs, small bubbles or foreign particles can only differentiate between them. How Can Gemologists Distinguish Lab-Grown Sapphires From Natural Sapphires? Distinguishing lab-grown sapphires from natural sapphires is challenging, but each artificial creation method leaves telltale signs that an expert gemologist can identify. Melt processes like flame fusion may create sapphires that exhibit curved growth lines and curved color bands not found in nature. The Czochralski process also may produce gems with inclusions like gas bubbles and smoky veils. Hydrothermal synthesis may leave distinctive “nail head”...