5.79-Carat Rich Blue-Green Tourmaline


A gorgeous rich blue-green Nigerian tourmaline in a modified version of my custom “Aurora” brilliant square design, 5.79 carats.

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This tourmaline is a beautiful rich blue-green color–green with a blue secondary.  Completely natural and untreated, this tourmaline comes from recent mining work in Nigeria. It is very clean, with just a few tiny trichyte inclusions, only visible with a 10x loupe.  The high clarity makes this a striking gemstone in the hand, glittering and quite brilliant for the depth of color.

I faceted this gem in a modified version of my custom “Aurora” brilliant square design.  The resulting gemstone is extremely bright and flashy, and has excellent off-axis performance.  The gem weighs 5.79 carats and measures 9.5 x 8.2 mm. It would make a beautiful center stone for a pendant or ring.

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