Diamond 3.8mm/ 0.198ct Loose (D, VVS-2, VeryGood)
Sale price¥29,800
Green Diamond 0.100ct Loose (VERY LIGHT GREEN, SI-1, Old Cut)
Sale price¥39,800
0.229ct Diamond Loose Stone (D, VS-2, Flanders Cut)
Sale price¥39,800
[Calafuri] Pt900 Rough Diamond 2.733ct, Diamond 0.68ct Ring with Certificate
Sale price¥198,000
Brazilian Paraiba Tourmaline 2.9mm/0.090ct Loose (CuO:1.7% MnO:1.4%)
Sale price¥69,800
Brazilian Dumortierite in Quartz 1.290ct Loose
Sale price¥12,800
Brazilian Blue Tourmaline in Quartz 10.466ct Loose
Sale price¥39,800
Brazilian Blue Tourmaline in Quartz 4.241ct Loose
Sale price¥19,800
Dumortierite in quartz from Brazil 7.3mm/1.729ct loose stone
Sale price¥12,800
[Listed on 22602645] [Colorful] Pt900 Ruby 0.6ct Ring
Sale price¥98,000
[Item ID: 22602630] [Karafuri] Pt900 Blue Sapphire 0.43ct Ring
Sale price¥98,000
Diamond loose/certificate transfer fee
Sale price¥8,800
Tanzanian Lavender Tanzanite 0.558ct Loose Stone
Sale price¥12,800
Tanzanian bicolor tanzanite 0.573ct loose stone
Sale price¥12,800
Tanzanian Lavender Tanzanite 0.577ct Loose Stone
Sale price¥12,800
Russian rough diamond (sawable) 0.088ct loose
Sale price¥19,800
Brazilian Paraiba Tourmaline 0.360ct Loose GIA
Sale price¥298,000
Brazilian Green Tourmaline 0.376ct Loose Stone
Sale price¥7,980
Brazilian Green Tourmaline 0.332ct Loose Stone
Sale price¥7,980
Tanzanite from Tanzania 0.497ct loose stone
Sale price¥9,800
Tanzanite from Tanzania 0.245ct loose stone
Sale price¥8,800
Tanzanite from Tanzania 0.385ct loose stone
Sale price¥8,800
Brazilian Paraiba Tourmaline 0.060ct Loose (CuO:1.6%, MnO:2.3%)
Sale price¥42,800
Russian Diamond Rough (Sawable) 0.103ct Loose (Trigon)
Sale price¥25,800
American Herkimer Diamond (Rock Crystal) 5.5mm/0.528ct Loose
Sale price¥8,800
Nigerian bicolor tourmaline 0.379ct loose stone
Sale price¥6,980
[12550887] Paraiba Tourmaline from Mozambique 0.784ct loose stone
Sale price¥128,000
[Calafuri] K18 Blue Sapphire and Diamond Ring Appraisal Report
Sale price¥128,000
Rough diamond from Sierra Leone (sawable) 0.089ct rough (trigon)
Sale price¥27,800
Brazilian Paraiba Tourmaline 0.052ct Loose Stone (CuO:2.0%, MnO:2.2%)
Sale price¥35,800
Sky blue topaz 1.719ct loose stone
Sale price¥8,800
Brazilian Pink Tourmaline 0.862ct Loose Stone
Sale price¥12,800
Brazilian Blue Tourmaline 0.196ct Loose
Sale price¥6,980
Brazilian Green Tourmaline 2.218ct Loose
Sale price¥25,800
Brazilian Bicolor Tourmaline 7.2mm/1.326ct Loose Stone
Sale price¥18,800
Namibian Green Tourmaline 7.0mm/1.206ct Loose Stone (Lagoon Tourmaline)
Sale price¥59,800
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.