Brazilian Medusa Quartz (Paraiba Quartz) 7.250ct Loose
Sale price¥54,800
Brazilian Paraiba Tourmaline in Quartz 7.9mm/1.314ct Loose Stone
Sale price¥29,800
Diamond (cabochon cut) 0.366ct loose
Sale price¥59,800
Kenyan Gold Sheen Sapphire 4mm/0.438ct Loose
Sale price¥55,800
Oregon Sunstone from the United States 0.372ct loose stone
Sale price¥12,800
Congo Bicolor Tourmaline 3.429ct Loose
Sale price¥128,000
Mexican Fire Opal 0.780ct Loose
Sale price¥12,800
Cambodian colorless zircon 1.212ct loose stone
Sale price¥15,800
Cambodian colorless zircon 0.508ct loose stone
Sale price¥8,800
Tanzanian Cobalt Spinel (Blue Spinel) 0.118ct Loose Stone Japan-Germany
Sale price¥29,800
Brazilian bicolor tourmaline 3.282ct loose
Sale price¥59,800
Myanmar Purple Spinel 0.434ct Loose Stone
Sale price¥12,800
Ruby 0.284ct loose
Sale price¥15,800
Australian Black Opal 0.386ct Loose Stone
Sale price¥39,800
Montana Sapphire 3.7mm/0.272ct Loose Stone (Blue Sapphire)
Sale price¥9,800
Brazilian Morganite 1.296ct loose stone
Sale price¥8,800
Pakistani Veirinite 0.096ct loose stone
Sale price¥12,800
Bekiri Blue Garnet (Color Change Garnet) from Madagascar 0.170ct Loose
Sale price¥18,800
Tanzania Green Zoisite 0.335ct Loose Stone
Sale price¥12,800
Myanmar Ruby 0.283ct Loose
Sale price¥29,800
Burmese Ruby 0.418ct Loose Stone Japan-Germany
Sale price¥35,800
Tanzanian Tanzanite 1.36ct Loose
Sale price¥49,800
Non-Oil Emerald 1.070ct Loose Gübelin Certificate
Sale price¥698,000
Brazilian Alexandrite 0.519ct loose stone (sugarloaf cut)
Sale price¥358,000
Brazilian rutilated quartz (rutile quartz) 12mm/6.709ct loose stone
Sale price¥9,800
Indian Moonstone 6.2mm/0.749ct Loose
Sale price¥7,980
Madagascar Blue Apatite 0.916ct Loose Stone
Sale price¥8,800
Diamond 3.0mm/0.123ct loose stone (D, VS2, octagonal cut)
Sale price¥28,800
Brazilian Blue Tourmaline 0.650ct Loose
Sale price¥9,800
Spanish Sphalerite 1.609ct loose stone
Sale price¥19,800
Madagascar Purple Sapphire 0.433ct Loose Stone
Sale price¥14,800
Brazilian Paraiba Tourmaline in Quartz 1.917ct loose stone
Sale price¥42,800
Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.568ct Loose Stone
Sale price¥22,800
Brazilian rutilated quartz (rutilated quartz) 7.8mm/1.307ct loose stone
Sale price¥12,800
Bicolor sapphire 0.481ct loose
Sale price¥25,800
Brazilian Euclase (Bicolor Euclase) 0.199ct Loose Stone
Sale price¥45,800
Tanzania gray spinel 0.844ct loose stone
Sale price¥18,800
Burmese Red Spinel 0.177ct Loose
Sale price¥9,800
Brazilian bi-color topaz (untreated) 1.452ct loose gemstone
Sale price¥18,800
Diamond (cabochon cut) 0.233ct loose
Sale price¥39,800
Brazilian Alexandrite 0.089ct Loose (Princess Cut)
Sale price¥19,800
Diamond 3.8mm/0.209 Loose (G, VVS1, 3Excellent H&C)
Sale price¥59,800
Russian Demantoid Garnet (Horsetail) 3.5mm/0.187ct Loose Stone
Sale price¥45,800
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.