






















[On sale July 5th, 10 PM JST] Brazilian Blue Tourmaline in Quartz 10.466ct Loose Stone
Blue tourmaline in quartz, encased within clear quartz. Needle-like and columnar crystals spread throughout, creating a sense of depth. This stone allows you to enjoy the natural beauty of its formation, harmonizing the unique color of tourmaline with the transparency of quartz.
・Type: Loose stone (natural stone)
・Stone name: Blue Tourmaline in Quartz from Brazil
・Weight: 10.466ct
・Size: 20.1×9.9mm
・Shape: Emerald cut
・Scratches/chips: A+
・Inclusions: -
・Remarks: ---
・Accessories: Karatz quality guarantee, loose stone case (clear zip case if it doesn't fit)
※ While we strive to make the photos as true to life in color as possible, the actual product may appear slightly different due to lighting conditions during photography or your monitor environment. Some photos may also be taken using a penlight.
※ For products with UV fluorescence photos, a 365nm wavelength black light is used for photography. If you use a light with a different wavelength (e.g., around 395nm), the fluorescence may appear weak or be difficult to confirm. The black light we use is here.
※ For information on scratches, chips, treatments, and inclusions, please see here.
※ For other frequently asked questions, please see here.
karatz_item_id: 12562274
・Type: Loose stone (natural stone)
・Stone name: Blue Tourmaline in Quartz from Brazil
・Weight: 10.466ct
・Size: 20.1×9.9mm
・Shape: Emerald cut
・Scratches/chips: A+
・Inclusions: -
・Remarks: ---
・Accessories: Karatz quality guarantee, loose stone case (clear zip case if it doesn't fit)
※ While we strive to make the photos as true to life in color as possible, the actual product may appear slightly different due to lighting conditions during photography or your monitor environment. Some photos may also be taken using a penlight.
※ For products with UV fluorescence photos, a 365nm wavelength black light is used for photography. If you use a light with a different wavelength (e.g., around 395nm), the fluorescence may appear weak or be difficult to confirm. The black light we use is here.
※ For information on scratches, chips, treatments, and inclusions, please see here.
※ For other frequently asked questions, please see here.
karatz_item_id: 12562274
Choose options























[On sale July 5th, 10 PM JST] Brazilian Blue Tourmaline in Quartz 10.466ct Loose Stone
Sale price¥39,800
Regular price







![[On sale August 15th at 10 PM] Paraiba Gacha where you can win a Brazilian Paraiba Tourmaline (CuO: 1.4%, MnO: 2.7%) normally priced at 39,800 yen, limited to 10 stones. (Multiple purchase discount available)](http://store.karatz.jp/cdn/shop/files/collage_a0ff6ff6-cfc6-4b64-bdac-9956db0ceb16.png?v=1786092530&width=2000)
![[On sale 8/15 at 10 PM JST] Colombian Emerald Gacha featuring Shimizu Kisaki's 8mm Clover In-cut (regularly 79,800 JPY) - only 15 stones available! (Bonus green beryl included) [Multiple purchase discount available]](http://store.karatz.jp/cdn/shop/files/81.png?v=1785982219&width=1890)
![[Published 12563989] Colombian Non-Oil Emerald 0.034ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P7313813_c6213cfc-19f3-42d7-be51-5508ac2480f1.jpg?v=1786658898&width=2074)





















![[Jeweler's tools] 4-piece set including loupe (10x magnification), tweezers, and 2 loose stones](http://store.karatz.jp/cdn/shop/files/P4130575.jpg?v=1776126091&width=4000)