Synthetic Opal (Synthetic Black Opal) 1.532ct Loose
Sale price¥15,800
Mexican Fire Opal (Faceted) 6.1mm/0.450ct Loose
Sale price¥12,800
Mexican Fire Opal (Faceted Cut) 0.352ct Loose
Sale price¥9,800
Bicolor sapphire 2.040ct loose stone
Sale price¥59,800
[Takeshi Yamamoto] Bicolor fluorite 15.624ct loose stone
Sale price¥45,800
Synthetic Opal (Synthetic Black Opal) 0.651ct Loose
Sale price¥15,800
Blue beryl (Macis beryl) 3.5mm/0.152ct loose stone
Sale price¥8,800
Blue Beryl (Macisi Beryl) 3.6mm/0.176ct loose stone
Sale price¥8,800
Brazilian bicolor tourmaline 0.914ct loose stone
Sale price¥12,800
Pt900/Pt850 Australian Black Opal 0.37ct Diamond 0.73ct Necklace
Sale price¥198,000
Australian Black Opal 0.386ct Loose Stone
Sale price¥39,800
Sri Lankan Chrysoberyl Cat's Eye 0.519ct Loose Stone
Sale price¥8,800
Brazilian bicolor tourmaline 0.675ct loose stone
Sale price¥9,800
Brazilian Paraiba Tourmaline 0.167ct loose stone (CuO: 1.1%, MnO: 3.6%)
Sale price¥69,800
Brazilian bicolor tourmaline 3.282ct loose
Sale price¥59,800
Brazilian Petalite 0.713ct loose stone
Sale price¥5,980
Brazilian Petalite 1.654ct loose stone
Sale price¥9,800
Bicolor tourmaline 0.840ct loose
Sale price¥22,800
Mexican Fire Opal 0.780ct Loose
Sale price¥12,800
Brazilian bicolor tourmaline cat's eye 22.056ct loose stone
Sale price¥198,000
Congo Bicolor Tourmaline 3.429ct Loose
Sale price¥128,000
Brazilian Paraiba Tourmaline in Quartz 2.827ct loose stone
Sale price¥49,800
Brazilian Paraiba Tourmaline in Quartz 3.049ct loose stone
Sale price¥49,800
Brazilian Paraiba Tourmaline in Quartz 4.5mm/0.284ct Loose Stone
Sale price¥22,800
Brazilian Paraiba Tourmaline in Quartz 1.146ct Loose Stone
Sale price¥29,800
Brazilian Paraiba Tourmaline in Quartz 8.0mm/1.287ct Loose Stone
Sale price¥29,800
Brazilian Paraiba Tourmaline in Quartz 7.9mm/1.314ct Loose Stone
Sale price¥29,800
Brazilian bicolor tourmaline 0.845ct loose stone
Sale price¥15,800
Myanmar Podretteite 0.834ct loose stone
Sale price¥298,000
Brazilian bicolor tourmaline 0.326ct loose stone
Sale price¥8,800
Mexican Fire Opal 6.7mm/0.953ct Loose
Sale price¥25,800
Mexican Fire Opal 4.9mm/0.333ct Loose
Sale price¥8,800
[Koshu Precious Stone Cutting Pluethree] Yellow Beryl 0.880ct Loose
Sale price¥29,800
Bicolor Benitoite 0.601ct Loose Japanese-German Edition
Sale price¥458,000
Nigerian Green Beryl 1.349ct Loose Stone
Sale price¥98,000
Pt950 Brazilian Paraiba Tourmaline Ring (Fluid Setting, Oval Cut)
Sale price¥64,800
Australian black opal 9.709ct loose stone
Sale price¥158,000
Brazilian Paraiba Tourmaline 0.230ct Loose GIA (CuO: 0.9%, MnO: 1.1%)
Sale price¥158,000
Mexican Fire Opal 0.576ct Loose (Faceted Cut)
Sale price¥9,800
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.