Bicolor grossular garnet 0.782ct loose
Sale price¥12,800
South African rhodochrosite 1.333ct loose Japanese-German edition
Sale price¥98,000
Dioptase from Namibia 3.1mm/0.132ct loose Japanese-German edition
Sale price¥55,800
Myanmar star diopside 0.898ct loose
Sale price¥12,800
Diamond 0.052ct loose (trapeze cut, VS class equivalent)
Sale price¥6,980
Strontium titanate 5mm/0.688ct loose stone
Sale price¥12,800
Chrysoberyl cat's eye 2.553ct loose (bicolor)
Sale price¥39,800
Chrysoberyl cat's eye 0.904ct loose
Sale price¥12,800
[12/6 22:00] Tanzanian Green Zoisite 0.435ct Loose Stone
Sale price¥12,800
Loose Tourmaline from Brazil, 0.270 ct
Sale price¥5,980
0.447ct Loose Chrysoberyl Cat's Eye from Sri Lanka
Sale price¥3,980
Brazilian Dumortierite in Quartz 10.0mm/5.357ct Loose Stone
Sale price¥39,800
2.275ct Australian Black Opal Loose Stone (Double Sided)
Sale price¥59,800
Mexican Opal (Faceted) 0.261ct Loose (Contrarus Opal)
Sale price¥12,800
Mexican Fire Opal (Faceted) 0.401ct Loose (Contrarus Opal)
Sale price¥15,800
Brazilian Amethyst 0.256ct Loose Stone
Sale price¥8,800
Brazilian rose quartz 4.019ct loose stone
Sale price¥11,000
Brazilian rose quartz 1.848ct loose stone
Sale price¥9,800
Green sapphire 0.607ct loose stone
Sale price¥12,800
Sri Lankan Yellow Sapphire 0.170ct Loose
Sale price¥12,800
Sri Lankan Yellow Sapphire 0.182ct Loose
Sale price¥9,800
Sri Lankan Golden Sapphire 0.649ct Loose
Sale price¥29,800
Sri Lankan Yellow Sapphire 0.297ct Loose
Sale price¥12,800
1.547ct Synthetic Sapphire Loose Stone (Synthetic Blue Sapphire)
Sale price¥9,800
Synthetic sapphire 0.879ct loose stone (synthetic blue sapphire)
Sale price¥14,800
Brazilian Rose Quartz 1.793ct Loose Stone
Sale price¥9,800
Brazilian rose quartz 2.167ct loose stone
Sale price¥9,800
Colombian emerald rough stone 7.924ct
Sale price¥9,800
Colombian emerald rough stone 5.895ct
Sale price¥9,800
![[On Sale at 10 PM on December 5th] YAG (Yttrium Aluminum Garnet) 6.5mm/1.548ct Loose Stone](http://store.karatz.jp/cdn/shop/files/yag-65mm1548ct-257679.jpg?v=1764892582&width=1200)
[Option] Milling
Sale price¥6,600
![[On sale 5/28 22:00] Bungo and Alchemist x KARATZ Collaboration Jewelry Vol. 3: Bungo Ring [Kan Kikuchi Model Ring]](http://store.karatz.jp/cdn/shop/files/03_d1fff56d-18a4-444f-bd64-dfa11a0b9a45.jpg?v=1764724993&width=1080)
![[On sale May 28th, 10 PM] "Bungo and Alchemist" x KARATZ Collaboration Jewelry Part 3: Bungo Ring [Edogawa Ranpo Model Ring]](http://store.karatz.jp/cdn/shop/files/02_db3f7ed0-177f-418b-b788-6f945e929acf.jpg?v=1764724403&width=1080)
![[On sale May 28th at 10 PM] "Bungo to Alchemist" x KARATZ Collaboration Jewelry Part 3: Bungo Ring [Sakunosuke Oda Model]](http://store.karatz.jp/cdn/shop/files/01.jpg?v=1764723334&width=1080)
Cornell pin from Tanzania 0.523ct loose
Sale price¥7,980
[Rouge cut] Almandine garnet 2.090ct loose
Sale price¥8,800
Blue zircon 0.397ct loose stone
Sale price¥6,980
Oregon Sunstone 0.976ct loose
Sale price¥18,800
YAG (Yttrium Aluminum Garnet) 7mm/1.775ct Loose Stone
Sale price¥9,800
Dioptase from Namibia 0.229ct loose Japanese-German book
Sale price¥69,800
Bicolor Andesine 6mm/0.756ct loose
Sale price¥12,800
Paraiba Tourmaline from Mozambique 2.037ct loose stone with gem analysis
Sale price¥498,000
Australian boulder opal 3.695ct loose
Sale price¥14,800
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.