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Size 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 ... 1 Carat Center 24 Natural Diamond Side Stones (1/5ct TDW) 12 Blue Sapphire Side Stones (1/8ct TGW) 1 1/3 Carats Total Gemstone ...
Scientists have successfully synthesized lonsdaleite, a hexagonal diamond 40% harder than diamond, after 50 years of attempts ...
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