[Takeshi Yamamoto] Bicolor fluorite 15.624ct loose stone
Sale price¥45,800
Synthetic Opal (Synthetic Black Opal) 0.723ct Loose
Sale price¥15,800
Synthetic Opal (Synthetic Black Opal) 0.651ct Loose
Sale price¥15,800
Mexican Fire Opal 1.755ct Loose
Sale price¥29,800
Mexican Fire Opal 1.341ct Loose
Sale price¥39,800
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
Blue Beryl (Macisi Beryl) 3.5mm/0.158ct loose stone
Sale price¥8,800
Australian Prehnite 5.398ct loose stone
Sale price¥12,800
Brazilian bicolor tourmaline 0.763ct loose stone
Sale price¥7,980
Brazilian bicolor tourmaline 1.177ct loose stone
Sale price¥12,800
Paraiba tourmaline from Brazil 0.112ct loose
Sale price¥29,800
Brazilian Paraiba Tourmaline 0.181ct loose stone (CuO: 0.7%, MnO: 0.2%)
Sale price¥59,800
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
Brazilian bicolor tourmaline 0.582ct loose stone
Sale price¥6,980
Australian black opal 0.386ct loose stone
Sale price¥39,800
Brazilian bicolor tourmaline 1.209ct loose stone
Sale price¥9,800
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
Hackmanite from Afghanistan, 15.600ct rough stone
Sale price¥8,800
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 Bicolor Tourmaline 16.088ct Loose (Tricolor) Nikkei
Sale price¥298,000
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
Padparadscha Sapphire 0.548ct Loose DGL
Sale price¥49,800
K18YG Brazilian Paraiba Tourmaline 0.30ct Diamond Ring GIA
Sale price¥198,000
Pt950 American Orange Benitoite 0.072ct Benitoite Ring
Sale price¥158,000
Pt950 American Orange Benitoite 0.076ct Benitoite Ring
Sale price¥98,000
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.