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Montana sapphire started when Dr. J.F. Kunz, Vice President of Tiffany, 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. It is now a rare stone as the mines have closed and there is no new production.
Comes with a gem identification certificate
・Type: Loose stone (natural stone)
・Stone name: Montana Sapphire (Yogo origin)
・Weight: 0.173ct
・Size: 4.3×2.7㎜
・Scratches/Chips: S
・Inclusions: S
・Remarks: ---
・Accessories: Identification certificate (Japan Germany Gemmological Laboratory), loose stone case (clear zip case if it doesn't fit)
▷Jewelry customization available
If you wish to customize your jewelry, please order from the link below along with your desired setting.
・【Choose from stones】Simple order
・【Choose from stones】Semi-order
※If you would like an image of the stone set in a frame, want to discuss a full custom order, or have any other questions, please feel free to contact us here.
※Rough stones are not supported. Also, some stones may not be supported.
※ We make every effort to ensure that the photos show the same color as the actual product, but due to lighting conditions during shooting, monitor environment, etc., there may be slight differences from the actual product. Also, some photos may be taken using a penlight.
※ For information on scratches, chips, treatments, and inclusions, please see here.
※ For other frequently asked questions, please see here.
karatz_item_id: 12562561
・Type: Loose stone (natural stone)
・Stone name: Montana Sapphire (Yogo origin)
・Weight: 0.173ct
・Size: 4.3×2.7㎜
・Scratches/Chips: S
・Inclusions: S
・Remarks: ---
・Accessories: Identification certificate (Japan Germany Gemmological Laboratory), loose stone case (clear zip case if it doesn't fit)
▷Jewelry customization available
If you wish to customize your jewelry, please order from the link below along with your desired setting.
・【Choose from stones】Simple order
・【Choose from stones】Semi-order
※If you would like an image of the stone set in a frame, want to discuss a full custom order, or have any other questions, please feel free to contact us here.
※Rough stones are not supported. Also, some stones may not be supported.
※ We make every effort to ensure that the photos show the same color as the actual product, but due to lighting conditions during shooting, monitor environment, etc., there may be slight differences from the actual product. Also, some photos may be taken using a penlight.
※ For information on scratches, chips, treatments, and inclusions, please see here.
※ For other frequently asked questions, please see here.
karatz_item_id: 12562561
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[Listed as 12562561] Unheated Montana Sapphire (Yogo type) 0.173ct Loose
Sale price¥128,000
Regular price



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