Category: All

Cullinan Dream 0

‘Cullinan Dream’ to Lead Christie’s New York Auction

RAPAPORT… The largest fancy intense blue diamond ever offered at auction is to go under the hammer at Christie’s New York next month. The auctioneer expects the cut-cornered rectangular mixed-cut, 24.18-carat, VS2 gem named...

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Red Beryl

Red beryl (aka bixbite, “red emerald,” or “scarlet emerald”) was first described in 1904, and while it is closely related on a chemical level to both emerald and aquamarine, it is considerably rarer than...

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Jeremejevite

First discovered in Siberia at the end of the 19th century, gem-quality crystals of jeremejevite (i.e. minerals large and clear enough to be cut to shape) have since been recovered in limited supplies in...

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Musgravite

This mineral was first discovered in 1967 at the Musgrave Range in South Australia, but has shown up in limited quantities in Greenland, Madagascar, and Antarctica. The very first specimen that was actually large...

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Red Diamonds

Technically speaking, red diamonds are diamonds, but they serve to highlight the fact that that diamonds actually come in a range of colors. They are, in order of rarity: yellow, brown, colorless, blue, green,...

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Grandidierite

This bluish-green mineral is found almost exclusively in Madagascar, though the first (and, presumably, only) clean faceted specimen (described here) was recovered from Sri Lanka. Like alexandrite and tanzinite, grandidierite is pleochroic, and can...