In recent years, significant amounts of gem-quality sodalite/hackmanite—some unusually transparent—have been produced from the Mogok region of Myanmar and Badakhshan Province in Afghanistan. Samples ...

“We’ve had discussions with three different museums across the globe who want to acquire the stone. They want it in the rough; they don’t want to polish it.” Botswana president Mokgweetsi Masisi ...

The diamond was cut from a 31.94-carat rough discovered at the Cullinan Mine in South Africa in 2023. Quig Bruning, Sotheby's head of jewellery, said it was rare to see diamonds with these ...

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Too much silk can harm transparency and also lead to poor color, lowering the value of the stone considerably. The shape of a rough sapphire crystal influences the finished stone’s shape and size.