Kasharai Amethyst 0.430ct Loose
Sale price¥12,800
[Takeshi Yamamoto] Brazilian Ametrine 29.930ct loose stone
Sale price¥79,800
Bolivian Ametrine 3.751ct loose stone
Sale price¥9,800
[Takeshi Yamamoto] Brazilian Ametrine 24.465ct loose stone
Sale price¥98,000
Brazilian Ametrine 11.843ct loose stone
Sale price¥22,800
Hollandite in Amethyst 3.048ct loose stone
Sale price¥9,800
Hollandite in Amethyst 4.019ct loose stone
Sale price¥15,800
Brazilian Amethyst 4.961ct Loose Stone
Sale price¥3,980
Myanmar spinel and Brazilian amethyst 7 stone set ring (Alterno setting)
Sale price¥79,800
Brazilian Chrysoberyl Cat's Eye 1.356ct Loose Stone
Sale price¥6,980
[Takeshi Yamamoto] Ametrine 20.856ct loose stone
Sale price¥98,000
Sri Lankan Chrysoberyl Cat's Eye 0.532ct Loose Stone
Sale price¥5,980
Color shift amethyst 4.191ct loose stone
Sale price¥14,800
Color shift amethyst 1.216ct loose stone
Sale price¥8,800
Sri Lankan Chrysoberyl Cat's Eye 0.519ct Loose Stone
Sale price¥8,800
[Koshu Precious Stones plusthree] Amethyst 4.306ct Loose Stone Patch
Sale price¥25,800
[Camellia Cut] Brazilian Ametrine 4.293ct [Collaboration] Loose Patch
Sale price¥49,800
Brazilian Trapiche Amethyst 10.855ct loose stone
Sale price¥6,980
Brazilian Trapiche Amethyst 14.949ct loose stone
Sale price¥8,800
[Koshu Precious Stones Plusthree] Ametrine 5.170ct Loose Patch
Sale price¥45,800
[Camellia Cut] Ametrine 12mm/5.411ct {Collaboration} Loose Stone Patch
Sale price¥55,800
Sri Lankan Chrysoberyl Cat's Eye 1.514ct Loose Stone
Sale price¥6,980
Sri Lankan Chrysoberyl Cat's Eye 1.074ct Loose Stone
Sale price¥5,980
Sri Lankan Chrysoberyl Cat's Eye 1.355ct Loose Stone
Sale price¥6,980
Bolivian Ametrine 36.887ct loose stone
Sale price¥98,000
Bolivian Ametrine 31.854ct loose stone
Sale price¥49,800
Bolivian Ametrine 16.867ct loose stone
Sale price¥39,800
Brazilian Amethyst 9.749ct Loose Stone
Sale price¥15,800
Brazilian Amethyst 12.9mm/7.637ct Loose Stone
Sale price¥12,800
Amethyst 9.860ct loose stone
Sale price¥18,800
Amethyst 4.249ct rough stone
Sale price¥9,800
Pink amethyst 3.275ct loose stone
Sale price¥9,800
Chrysoberyl cat's eye 1.088ct loose stone
Sale price¥8,800
[Camellia Cut] Ametrine 14mm/8.308ct Loose Stone
Sale price¥89,800
Pink amethyst 3.496ct loose
Sale price¥6,980
Chrysoberyl cat's eye 2.843ct loose
Sale price¥39,800
Amethyst 39.112ct raw stone from Zambia
Sale price¥8,800
Amethyst 29.357ct raw stone from Zambia
Sale price¥6,580
Amethyst 30.312ct raw stone from Zambia
Sale price¥6,580
Amethyst 3.090ct loose
Sale price¥6,980

Why not take your favorite gemstone that you found at KARATZ and have it made into custom-made jewelry? It will be made by skilled Japanese craftsmen.
We carefully craft each piece of jewelry, starting with the stone setting, to match the individual characteristics of the gemstone.

The fifth reprint has been decided and is now on sale at bookstores nationwide and online.
Written by KARATZ, book “Jewelry Illustrated Book”
The book provides explanations about over 300 types of gemstones, from new standard birthstones to rare stones that are hard to find, as well as a diary of our company representative, Mr. Koyama's, gemstone shopping experience in Thailand and Sri Lanka, and tips for photographing gemstones, allowing you to learn about the appeal of gemstones from various perspectives.