
















[On sale May 24th, 10 PM JST] Brazilian Color-Shift Amethyst 1.865ct Loose Gemstone
Amethyst has been cherished as an ornament since ancient times. There was even a time when purple could only be used by royalty. It is a classical gemstone with an elegant beauty. As its mineral name is natural quartz, it is resistant to direct sunlight and dryness and is easy to care for.
This is a color-shift amethyst with a heptagonal cut by Sri Lankan master cutter Sanje. Its color-shifting property, allowing it to display different expressions depending on the light source, is also attractive.
・Type: Loose stone (natural stone)
・Stone name: Color-shift Amethyst
・Weight: 1.865ct
・Size: 8.3 x 8.5 mm
・Shape: Custom cut
・Scratches/Chips: S-A+
・Inclusions: S
・Remarks: ---
・Accessories: KARATZ quality guarantee, loose stone case (clear zip case if it doesn't fit)
▷Jewelry customization available
If you wish to have your jewelry customized, please order from the link below along with your desired setting.
・【Choose from stone】Simple Order
・【Choose from stone】Semi-Custom Order
※If you would like an image of the stone on the setting, want to discuss a full custom order, or have any other questions or inquiries, please feel free to contact us here.
※Rough stones are not eligible. Also, some stones may not be eligible.
※ While we strive to make the photos show the exact same color as the actual product, the color may appear slightly different due to the lighting conditions during photography or the monitor environment you are using. Also, in some cases, a penlight may be used for photography.
※ For information on scratches, chips, treatments, and inclusions, please see here.
※ For other frequently asked questions, please see here.
karatz_item_id: 12557683
Choose options























![[On sale 8/12, 10 PM] "Limited to 10 stones" Strong Fire Gem Gacha featuring 3mm Benitoite and Blue Zircon, normally 42,800 yen (multiple purchase discount available)](http://store.karatz.jp/cdn/shop/files/collage_278d67ff-f62b-4a8b-9e44-16602ef86502.png?v=1786093945&width=2000)
![[On sale August 12th at 10 PM] "Limited to 15 Stones" Diamond Gacha featuring rare butterfly-cut diamonds "Multiple Purchase Discount Available"](http://store.karatz.jp/cdn/shop/files/2026-08-0717.06.55.png?v=1786090036&width=1279)
![[12564014 listed] Madagascar Royal Blue Sapphire 0.559ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P7313635_14e21f9a-c659-4e26-98cc-121a6a6526df.jpg?v=1786405650&width=3004)
![[Listed as 12563592] Red Coral 0.908ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P1010942_0ddc060b-5571-4bb3-82db-903a0f6846f0.jpg?v=1784777741&width=4000)
![[Published as 12564055] American Red Beryl 0.239ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P8061727_7397d8ee-50f1-4d18-895f-81834f48bc37.jpg?v=1786405834&width=3165)
![[Published as 12564054] Kochi Prefecture Coral 8.132ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P8061786_dbfd5e49-ee7b-485a-84a1-e71f7aec96c4.jpg?v=1786406143&width=3463)

![[Posted on 12563959] Madagascar Padparadscha Sapphire 0.164ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P7241965_cec751e0-3766-4ff6-a740-715fc57f7e8e.jpg?v=1786398430&width=2936)
![[12563912 listed] Colombian Pyrite and Mica in Emerald 0.500ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P7290484.jpg?v=1785318021&width=4000)



![[#202607 Akihabara Pop-up Store - Currently out on loan] [Listed as 12563392] Tanzanian Red Spinel 0.291ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P6258339_9ab76656-a3f6-484b-99d4-5a2c0a9869bd.jpg?v=1786348136&width=3175)












![[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)