Montana sapphire (from Yogo) 0.789ct rough stone

Montana sapphire began when Dr. J.F. Kunz, then a vice president at Tiffany & Co., proved that a blue rough stone found in Yogo Valley in Montana was sapphire. There are several deposits, but this one is from Yogo, which can be said to be the birthplace of Montana sapphire. Blue to violet sapphires are mainly produced in Yogo. The mine is currently closed, so it is a rare stone with no new production. This is a rare Montana sapphire from Yogo that was purchased directly from the owner of a Montana sapphire mine in the United States.

・Type: Raw stone
・Stone name: Montana sapphire (from Yogo)
・Weight: 0.789ct
・Scratches/chips: -
・Inclusion: -
·remarks:---
・Accessories: Karatz quality guarantee card, case

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*Rough stones are not available. There are also some stones that cannot be used.

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karatz_item_id: 12546329