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  2. Moissanite - Wikipedia

    en.wikipedia.org/wiki/Moissanite

    A moissanite engagement ring Moissanite: emerald cut. Moissanite was introduced to the jewelry market as a diamond alternative in 1998 after Charles & Colvard (formerly known as C3 Inc.) received patents to create and market lab-grown silicon carbide gemstones, becoming the first firm to do so. By 2018 all patents on the original process world ...

  3. Charles & Colvard - Wikipedia

    en.wikipedia.org/wiki/Charles_&_Colvard

    Charles & Covard was the first company to produce and sell synthetic moissanite, [9] under U.S. patent US5723391 A, first filed by C3 Inc., North Carolina. [10] The gemstones are made from silicon carbide crystals, supplied under an exclusive agreement from fellow North Carolina company Cree Inc. since 2014. [11]

  4. 11 Engagement Ring Trends for 2024 That Will Make You Say ‘I Do’

    www.aol.com/11-engagement-ring-trends-2024...

    Lab diamonds might be less expensive than natural diamonds, but they’re still precious stones that run in the thousands of dollars. You just might get more bang for your buck. 6.

  5. Extraterrestrial diamonds - Wikipedia

    en.wikipedia.org/wiki/Extraterrestrial_diamonds

    A proposal that diamonds may also form in Jupiter and Saturn, where the concentration of carbon is far lower, was considered unlikely because the diamonds would quickly dissolve. [16] Experiments looking for conversion of methane to diamonds found weak signals and did not reach the temperatures and pressures expected in Uranus and Neptune.

  6. Diamond - Wikipedia

    en.wikipedia.org/wiki/Diamond

    Diamonds sold through this process are known as conflict diamonds or blood diamonds. [131] In response to public concerns that their diamond purchases were contributing to war and human rights abuses in central and western Africa, the United Nations, the diamond industry and diamond-trading nations introduced the Kimberley Process in 2002. [142]

  7. Gemstone - Wikipedia

    en.wikipedia.org/wiki/Gemstone

    Moissanite actually has a higher refractive index than diamond, and when presented beside an equivalently sized and cut diamond will show more "fire". Cultured, synthetic, or "lab-created" gemstones are not imitations: The bulk mineral and trace coloring elements are the same in both.