Purple spinel 0.465ct loose
Sale price¥5,980
Purple Apatite 0.915ct Loose Stone with Certificate of Authenticity
Sale price¥13,800
Non-Oil Emerald 1.030ct Loose Gübelin Gübelin Certificate
Sale price¥698,000
Non-Oil Emerald 1.070ct Loose Gübelin Certificate
Sale price¥698,000
Namibian Dioptase 0.134ct Loose Stone, Japan-Germany Mirror
Sale price¥59,800
Dioptase from Namibia 3.2mm/0.123ct loose
Sale price¥59,800
Namibian Jeremejevite 0.158ct loose stone
Sale price¥45,800
Nigerian Morganite 0.862ct loose stone
Sale price¥17,800
Nigerian morganite 0.743ct loose stone
Sale price¥14,800
Tanzanian Rhodolite Garnet 0.370ct Loose Stone
Sale price¥6,980
Tanzanian Rhodolite Garnet 0.336ct Loose Stone
Sale price¥6,980
Tanzanian Violet Spinel 0.541ct Loose Stone
Sale price¥9,800
1.008ct Tanzanian orange zircon loose stone
Sale price¥9,800
[12/6 22:00] Tanzanian Green Zoisite 0.435ct Loose Stone
Sale price¥12,800
Color change Andesine 1.90ct loose
Sale price¥29,800
Rough diamond (sawable) 0.466ct rough diamond (with trigon)
Sale price¥98,000
Tanzanian Rhodolite Garnet 4.5mm/0.394ct Loose Stone
Sale price¥6,980
German Awinite 3.5mm/0.158ct loose stone
Sale price¥98,000
Diamond (cabochon cut) 0.233ct loose
Sale price¥39,800
Tanzanian Almandine Garnet 1.103ct Loose Stone
Sale price¥9,800
Tanzanite from Tanzania 0.580ct loose stone
Sale price¥14,800
Tanzanian Kornerupine 0.212ct loose stone
Sale price¥19,800
Pink zoisite from Tanzania 0.536ct loose Japanese German edition
Sale price¥39,800
Tanzanite from Tanzania 0.767ct loose stone
Sale price¥29,800
Tanzania Cobalt Spinel 0.211ct Loose Stone JTL Catalog
Sale price¥29,800
Tanzanian Rhodolite Garnet 1.194ct Loose Stone
Sale price¥15,800
Tanzania Green Zoisite 0.335ct Loose Stone
Sale price¥12,800
Tanzanian Mint Garnet 1.276ct Loose Stone
Sale price¥69,800
Tanzanite 0.477ct loose stone (princess cut) from Tanzania
Sale price¥12,800
Tanzanian Kornerupine 0.277ct loose stone
Sale price¥29,800
Tanzanite from Tanzania 1.162ct loose stone
Sale price¥39,800
Tanzanian Golden Sheen Sapphire 3.8mm/0.301ct Loose Stone
Sale price¥13,800
Tanzania gray spinel 0.844ct loose stone
Sale price¥18,800
Tanzanian Tanzanite, 5.0mm/0.558ct Loose Stone
Sale price¥15,800
Tanzanite from Tanzania 4.7mm/0.503ct loose stone
Sale price¥14,800
Tanzanite from Tanzania 1.140ct loose stone
Sale price¥39,800
Cornell pin from Tanzania 0.246ct loose
Sale price¥39,800
German Auyinite 3.5mm/0.131ct Loose Stone
Sale price¥29,800
Tanzanite 0.753ct loose stone from Tanzania
Sale price¥25,800
Tanzanian Kornerupine 0.084ct Loose Stone
Sale price¥22,800
Tanzanian Cobalt Spinel (Blue Spinel) 0.118ct Loose Stone Japan-Germany
Sale price¥29,800
Diamond 3.8mm/0.209 Loose (G, VVS1, 3Excellent H&C)
Sale price¥59,800
3.2mm/0.132ct loose diamond (G, VS-2, Excellent)
Sale price¥29,800
Diamond 0.402ct Loose (H, VS2, Flanders Cut)
Sale price¥79,800
Diamond 3.3mm/0.134ct loose stone (I, VVS-2, Excellent H&C)
Sale price¥22,800
Diamond 0.245ct loose stone (E, VS-1, octagon brilliant cut)
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.