Brazilian bicolor tourmaline cat's eye 2.640ct loose stone
Sale price¥12,800
South African diamond rough stone 0.210ct
Sale price¥8,800
Madagascar Purple Sapphire 0.342ct Loose Stone
Sale price¥12,800
Cassiterite 1.676ct loose stone with certificate
Sale price¥45,800
Cassiterite 1.477ct loose stone (bicolor) with certificate
Sale price¥39,800
Garden quartz 8.690ct loose
Sale price¥2,980
South African Diamond Rough (Sawable) 0.107ct Rough Trigon
Sale price¥42,800
Pakistani Veirinite 0.173ct loose stone with certificate
Sale price¥45,800
Pakistani Veirinite 0.157ct loose stone with certificate
Sale price¥39,800
Indian Star Garnet 11.440ct Loose Stone (6 Rows)
Sale price¥5,980
Mexican Cantera Opal 18.00ct Loose
Sale price¥29,800
Montana Agate 6.534ct Loose Stone
Sale price¥6,980
Mexican Fire Opal 1.320ct Loose
Sale price¥13,800
Brazilian Dumortierite in Quartz 0.578ct loose stone (faceted cut)
Sale price¥5,980
Brazilian Dumortierite in Quartz 0.482ct loose stone (faceted cut)
Sale price¥5,980
Brazilian Dumortierite in Quartz 0.652ct loose stone (faceted cut)
Sale price¥9,800
Brazilian Dumortierite in Quartz 0.313ct loose stone (faceted cut)
Sale price¥6,980
Brazilian Dumortierite in Quartz 0.154ct loose stone (faceted cut)
Sale price¥9,800
Brazilian Green Spodumene 2.619ct Loose Stone
Sale price¥12,800
Brazilian Green Spodumene 1.943ct Loose Stone
Sale price¥9,800
Brazilian Green Spodumene 6.484ct Loose Stone
Sale price¥29,800
Brazilian Spodumene 3.200ct loose stone
Sale price¥16,800
Brazilian Petalite 2.164ct loose stone
Sale price¥11,000
Brazilian Petalite 1.659ct loose stone
Sale price¥12,800
Sapphire 0.328ct loose stone
Sale price¥12,800
Sri Lankan Yellow Sapphire 0.209ct Loose
Sale price¥15,800
Sri Lankan Yellow Sapphire 0.318ct Loose
Sale price¥15,800
Sri Lankan Yellow Sapphire 0.349ct Loose
Sale price¥15,800
Oregon Sunstone from the United States 0.276ct loose stone
Sale price¥7,980
![[On sale from 22:00 on 5/1] Mali Garnet (Grossular/Andradite Garnet) 4.2mm/0.398ct Loose Stone with Certificate of Authenticity from the Republic of Mali](http://store.karatz.jp/cdn/shop/files/P3137639_0e3bd582-8297-4c0c-9bf5-09a61c159ace.jpg?v=1749163154&width=2881)
Brazilian Paraiba tourmaline 0.184ct raw stone (CuO:1.5%, MnO:0.6%)
Sale price¥12,800
Brazilian Paraiba tourmaline 0.180ct raw stone (CuO:1.8%, MnO:0.1%)
Sale price¥12,800
Brazilian Euclase 5.0mm/0.492ct Loose Stone
Sale price¥9,800
Brazilian Dumortierite in Quartz 55.207ct Rough Stone
Sale price¥8,800
Book "Gemstone Encyclopedia" (KARATZ, editor: Keiichiro Koyama)
Sale price¥2,640
Brazilian bicolor tourmaline 12.842ct loose
Sale price¥298,000
Russian demantoid garnet (horsetail recognized) 5.5mm/0.710ct loose
Sale price¥148,000
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.