[Lottery Sale 0731_07] Unheated Montana Sapphire (Yogo Mine) 0.186ct Loose Stone with Japan-Germany Gemological Analysis Report

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Montana sapphires began when Dr. J.F. Kunz, then vice president of Tiffany & Co., proved that the blue rough stone found in Yogo Gulch, Montana, was a sapphire. There are several deposits, but this one is from Yogo, which can be called the birthplace of Montana sapphires. Yogo mainly produces blue to violet sapphires. Since the mine is now closed, it is a rare stone with no new production. Comes with an analysis report and origin identification report from the Japan-Germany Gem Research Institute.

・Type: Loose stone (natural stone)
・Stone name: Montana Sapphire (Yogo origin)
・Weight: 0.186ct
・Size: 3.4×3.4mm
・Scratches/Chips: S
・Inclusions: S
・Remarks: ---
・Accessories: Identification report/analysis report (Japan-Germany Gem Research Institute), loose stone case (clear case with zip if it doesn't fit)

▷Jewelry processing available
If you wish for jewelry processing, please order with the desired setting from the link below.
・【Choose from stones】Simple Order
・【Choose from stones】Semi-Order
※If you would like an image of the stone placed in the setting, would like to consult about a full order, or have any other questions, please feel free to contact us here.
※Rough stones are not eligible. Also, some stones may not be eligible.

※ We try our best to make the photos the same color as the actual product, but due to the lighting conditions during shooting and your monitor environment, the actual product may look slightly different. Also, some photos may have been taken using a penlight.

※ For scratches, chips, treatments, and inclusions, please see here.

※ For other frequently asked questions, please see here.


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