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      Synthetic diamond is the hardest known material, where hardness is defined as resistance to indentation. The hardness of synthetic diamond depends on its purity, crystalline perfection and orientation: hardness is higher for flawless, pure crystals oriented to the direction (along the longest diagonal of the cubic diamond lattice).

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      Gem Diamonds vs. Industrial Diamonds. Gem diamonds are diamonds with color and clarity that make them suitable for jewelry or investment use. These diamonds are rare and make up a minor portion of worldwide diamond production. Gemstone diamonds are sold for their beauty and quality.

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      Synthetic diamond is the hardest known material, where hardness is defined as resistance to indentation. The hardness of synthetic diamond depends on its purity, crystalline perfection and orientation: hardness is higher for flawless, pure crystals oriented to the direction (along the longest diagonal of the cubic diamond lattice).

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      Laboratory-grown diamonds have essentially the same chemical composition, crystal structure, optical, and physical properties of diamonds found in nature. Most laboratory-grown diamonds are categorized as either high-pressure, high-temperature (HPHT) or chemical vapor deposition (CVD) diamonds, depending on the method of their production.

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      Industrial Diamonds As Good as Gemstones, or Better? By Ali Somarin 09.30.2014 Are synthetic industrial diamonds as good as natural ones? While the majority of mined diamond is industrial grade, it represents a mere 3% of the diamond used in industry. some of which are making their way into the gemstone market.

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      Shop on eBay to find a wide variety of loose, rough, natural diamonds. What to consider when buying rough diamonds. When you're looking to buy uncut, natural diamonds, there are three things to keep in mind: Color: In the world of gemstones, the less color that a diamond has, generally speaking, the more brilliance and sparkle it will have

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      Industrial Diamonds As Good as Gemstones, or Better? By Ali Somarin 09.30.2014 Are synthetic industrial diamonds as good as natural ones? While the majority of mined diamond is industrial grade, it represents a mere 3% of the diamond used in industry. some of which are making their way into the gemstone market.

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      Jul 25, 2016· HPHT-grown synthetic diamonds are now available in the gem and jewelry marketplace in a wide range of colors, as evident from this attractive synthetic yellow diamond jewelry (1.00 to 1.25 cts) provided by Gemesis Corp. and these loose synthetic diamonds (each under 1 ct) from Lucent Diamonds and Chatham Created Gems.

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      Lab Grown Gemstones. MiaDonna’s selection of lab created gemstones (also called lab-grown or synthetic gemstones) are created using the most scientifically advanced processes producing beautiful, precision-cut lab-created gemstones in a wide variety of colors and shapes.

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      Should I Use Oxide Polish Or Diamond For Polishing Gems?

      I’m frequently asked by novice gem cutters whether they should use oxide polish or diamond for polishing gemstones. I do have my opinions, based on many years of experience. First, I want to be clear about the type of materials I cut, because your gem types are a deciding factor when you’re choosing an abrasive for polishing.

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      Apr 22, 2017· Check out the most expensive diamonds in the world! A farmer in Brazil found the rough stone that was to become the Moussaieff Red Diamond in the 90’s. 18 Most Rare & Expensive Gemstones

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      Apr 22, 2017· Check out the most expensive diamonds in the world! A farmer in Brazil found the rough stone that was to become the Moussaieff Red Diamond in the 90’s. 18 Most Rare & Expensive Gemstones

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      Diamond. Diamond, the hardest known natural material, is named from the Greek "adamas", meaning invincible.A diamond is a transparent crystal of tetrahedrally bonded carbon atoms. Diamond is famed not only for its exceptional hardness, but also for its high refractive index and high dispersion of visible light the ability to split white light into its component colors.

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      Diamond is also the gem that marks the 60th and 75th wedding anniversaries. Some gemstones have synthetic counterparts that have essentially the same chemical, physical, and optical properties, but are grown by man in a laboratory. pale yellow to brownish orange variety of quartz. View the Gem Encyclopedia. You Might Also Like.

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      Sep 11, 2018· A 1-carat man-made diamond sells for about $4,000 and a similar natural diamond fetches roughly $8,000. De Beers new lab diamonds will sell for about $800 a carat. That’s a fifth of the price of existing man-made stones and one-tenth of the cost of buying a similar natural gem. No wonder competitors are worried.

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      Synthetic diamonds are diamonds manufactured in a laboratory, as opposed to diamonds mined from the Earth. The gemological and industrial uses of diamond have created a large demand for rough stones. This demand has been satisfied in large part by synthetic diamonds, which have been manufactured by various processes for more than half a century.

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      Jun 21, 2012· The Art Of Diamond Cutting GIA Diamond Brilliant Cutting of Diamonds Rought polish.

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      Their beauty and hardness make them ideal choices for jewelry. The demand for sapphires, however, has long exceeded the natural supply. In fact, gem-quality corundum, which includes sapphires and rubies, is rarer than diamond. Not surprisingly, sapphires and rubies were some of the first gemstones to be synthesized over 100 years ago.

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      Aug 26, 2019· Black diamonds are very rare, so most of the stones on the market are treated white stones or synthetic. The polycrystalline structure of black diamond also makes it difficult to cut smooth tables into them. Gem quality black diamond’s can be worth just as much or more than white stones.

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      Industrial diamond, any diamond that is designated for industrial use, principally as a cutting tool or abrasive. In general, industrial diamonds are too badly flawed, irregularly shaped, poorly coloured, or small to be of value as gems, but they are of vital importance in

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      Aug 11, 2016· Home Gemstones Yellow Sapphire Gemstone Complete Guide To Yellow Sapphire Gemstone (Pukhraj) Complete Guide To Yellow Sapphire Gemstone (Pukhraj) August 11, 2016 By admin 49 comments natural yellow sapphire, The stone which reflects two colors and contains a black smudge or colorless is regarded to be fake or synthetic yellow sapphire stone.