Mexican Cantera Opal 8.331ct Loose
Sale price¥39,800
Cambodian Zircon 1.620ct Loose
Sale price¥15,800
Madagascar sphene 0.803ct loose stone
Sale price¥19,800
Brazilian Imperial Topaz 0.398ct Loose Stone
Sale price¥12,800
Zimbabwean Euclase 0.129ct Loose Stone with Certificate of Authenticity
Sale price¥29,800
Brazilian Swiss Blue Topaz 1.062ct Loose Stone
Sale price¥9,800
Tanzanite from Tanzania 0.237ct loose stone
Sale price¥8,800
Orange calcite 0.740ct loose stone by Nikkei
Sale price¥9,800
Mexican Fire Opal (Faceted Cut) 0.844ct Loose
Sale price¥15,800
Bicolor Fluorite 24.682ct Loose
Sale price¥29,800
![[Sales end on Sunday, July 19] TV Anime "Blue Lock" x KARATZ Collaboration Vol. 1: Lock Ear Cuff (Single Ear)](http://store.karatz.jp/cdn/shop/files/bluelock_bnrB_03_1080x1080_54e9944f-b96d-42fd-b167-3e224b720075.jpg?v=1752207410&width=1080)
![[Sales end on Sunday, July 19] TV Anime "Blue Lock" x KARATZ Collaboration Vol. 1 Chain Ring](http://store.karatz.jp/cdn/shop/files/bluelock_bnrB_02_1080x1080_a2a5e1bf-7896-4409-a796-fd8d6ff1feb4.jpg?v=1752207424&width=1080)
![[Sales End Sunday, July 19] TV Anime "Blue Lock" x KARATZ Collaboration Vol. 1 Mark Ring](http://store.karatz.jp/cdn/shop/files/bluelock_bnrB_01_1080x1080_33d61cee-9f2e-4c79-89ce-34360574e91a.jpg?v=1752207434&width=1080)
![[On sale Friday, April 24 at 10 PM JST] TV Anime "Once Upon a Time, a Magical Girl and an Evil Boss Were At Odds." x KARATZ Collaboration Magical Girl-Inspired Necklace - Kagari Hanabana Model -](http://store.karatz.jp/cdn/shop/files/1080x1080px_94b67cb3-55c3-4f9f-a0d9-23c5a7bf6b8f.jpg?v=1751940327&width=2250)
![[Sales start on April 24 (Fri) at 10 PM] TV Anime "The Magical Girl and the Evil Lieutenant Who Disappeared From My Heart" x KARATZ Collaboration Magical Girl Inspired Necklace - Fakamori Byakuya Model -](http://store.karatz.jp/cdn/shop/files/1080x1080px_f03f9779-02ce-4bf3-820d-e59d2509d088.jpg?v=1751939600&width=2250)
![[Available starting Friday, April 24th at 10 PM JST] TV Anime "The Magical Girl and the Evil Lieutenant Who Used to Be Archenemies" x KARATZ Collaboration Acrylic Stand Coasters Featuring Newly Drawn Illustrations](http://store.karatz.jp/cdn/shop/files/a8cce7eefae3f4e718983e003dc5e0e0_e3ca04b3-39b0-4f97-8788-2631afa137d5.jpg?v=1761641114&width=4500)
![[Available from Friday, April 24th, 10 PM JST] TV Anime "The Magical Girl and Evil Spirit Used to Be Archenemies." x KARATZ Collaboration Original Illustration Can Mirror](http://store.karatz.jp/cdn/shop/files/1d418f01ef377f6875b664fb78e3fd74.jpg?v=1751935469&width=2250)
![[Sales start on Friday, April 24th at 10 PM JST] TV Anime "The Magical Girl and Evil Spirit Strive to Be the Best Together" x KARATZ Collaboration Original Illustration Heart Can Badge](http://store.karatz.jp/cdn/shop/files/ce7fda6ab48aa73ed08a665ad0e71fe1.jpg?v=1751934767&width=2250)
![[Sales begin 4/24 (Fri) at 10 PM] TV Anime "Once Upon a Time, a Magical Girl and an Evil Being Were at Odds." x KARATZ Collaboration Original Illustration Acrylic Keychain](http://store.karatz.jp/cdn/shop/files/45469d1b4a585b642446f6595788c1cf.jpg?v=1751934149&width=2250)
Sri Lankan Yellow Sapphire 0.320ct Loose
Sale price¥15,800
Mexican Hyalite Opal 0.942ct Loose
Sale price¥9,800
Colombian Euclase 2.015ct loose stone
Sale price¥18,800
Brazilian Aquamarine 0.176ct Loose Stone
Sale price¥8,800
Mexican Hyalite Opal 6.0mm/0.708ct Loose
Sale price¥25,800
Moldavite from former Czechoslovakia 0.094ct loose stone
Sale price¥6,980
American Red Beryl 0.217ct Loose
Sale price¥49,800
Pakistani Axinite (Blue Tint) 0.815ct Loose Stone
Sale price¥45,800
Synthetic Alexandrite 0.460ct loose stone
Sale price¥14,800
![[Limited to 6 stones] Contains 2 stones in total: 1 gemstone (rough stone) that is actually featured in a gemstone encyclopedia + 1 emerald rough stone.](http://store.karatz.jp/cdn/shop/files/collage_5fd345f1-1646-43a1-b347-1e83dd089a63.png?v=1751925957&width=2000)
[Takeshi Yamamoto] Brazilian Rock Crystal 12.725ct Loose
Sale price¥39,800
Cinnabar rough stone (38.1 x 28.8 x 22.4 mm)
Sale price¥98,000
Brazilian bicolor tourmaline 13.927ct loose stone
Sale price¥198,000
Yellow Diamond (Cabochon Cut) 0.176ct Loose
Sale price¥29,800
Brazilian bicolor tourmaline 0.572ct loose stone (rose cut)
Sale price¥14,800
Brazilian Bicolor Tourmaline 0.901ct Loose Stone (Rose Cut)
Sale price¥12,800
Pezzotite from Madagascar 0.257ct loose
Sale price¥15,800
Brazilian chlorite in quartz 27.725ct loose stone
Sale price¥19,800
Madagascar Apatite 1.125ct Loose Stone
Sale price¥8,800
Brazilian bicolor tourmaline 1.032ct loose stone
Sale price¥25,800
Madagascar Apatite 0.961ct Loose Stone
Sale price¥6,980
Oregon Sunstone from the United States 8.0mm/1.835ct loose stone
Sale price¥22,800
Brazilian bicolor tourmaline 1.875ct loose stone
Sale price¥39,800
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.
So that more people can feel closer to jewellery and enjoy it easily.
We will introduce KARATZ's thoughts on products, the attention to detail and efforts in selecting gemstones and creating jewelry.
KARATZ's Initiatives and Social Contributions
We will introduce KARATZ's efforts, including nurturing the next generation and business collaboration to develop the industry, and supporting children in Sri Lanka, the land of jewels.
KARATZ Books
These are books that KARATZ has been involved in writing, supervising, and planning. They are all books that allow you to enjoy gemstones from various angles. You can also purchase them directly.
jeweler's tools
For those who want to enjoy jewelry more but don't know what tools to use, we will introduce tools that are also used by KARATZ staff. You can also purchase them directly.