Ultra Rare Blue Grandidierite Gemstone from Madagascar, 0.63 cts., 11x4 mm., Fantasy Cut Spike Shape

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Gem: Grandidierite
Weight: 0.63 cts.
Size: 11.1 x 3.8 x 2.0 mm
Color: Bright Steely Blue
Clarity: VVS
Cut: Fantasy Spike
Locality: Madagascar
Treatment: None

Here is an incredible and truly unique treasure! This is the only Fantasy cut Grandidierite that we know of, and if more are produced, this is the first one ever. Grandidierite is one of the rarest gem minerals in the world. It was first described in 1902, but there has been little of the mineral found until the few years and gem quality material was unheard of until recently. It is a Borosilicate with a hardness of 7.5 which is durable enough for jewelry! Rare gems that are durable enough for jewelry are few and far between. This stone is a gorgeous bright steely blue color! It has exceptional clarity and is nearly flawless! It is a natural Earth mined stone and has not been treated. The stone is stunning in person! This is a true one-of-a-kind and will make an irreplaceable piece of jewelry. This gemstone was created by Brett Kosnar of Kosnar Gem Co., during July 2022. Enjoy!

Shipping from United States

Processing time

1-2 business days

Estimated shipping times

  • North America : 3 - 7 business days
  • Europe : 5 - 12 business days
  • Asia Pacific : 7 - 14 business days

I'll do my best to meet these shipping estimates, but can't guarantee them. Actual delivery time will depend on the shipping method you choose.

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