Synthetic Moissanite 10mm/4.147ct Loose Stone
Sale price¥16,800
Colombian Trapiche Emerald 0.712ct Loose
Sale price¥39,800
Brazilian Blue Tourmaline 0.650ct Loose
Sale price¥9,800
Blue sapphire 0.217ct loose stone
Sale price¥15,800
Brazilian bicolor tourmaline 1.953ct loose stone
Sale price¥18,800
American Red Beryl 0.130ct Loose
Sale price¥29,800
Tanzania Color Change Chrome Tourmaline 13.194ct Loose Stone Chuhokan
Sale price¥398,000
Afghanite from Afghanistan 0.250ct loose stone
Sale price¥6,980
Afghanite 0.333ct loose stone from Afghanistan, Japan-Germany
Sale price¥8,800
Afghanite 0.447ct loose stone from Afghanistan, Japan-Germany
Sale price¥8,800
Namibian Jeremejevite 0.194ct loose stone by Nikkei
Sale price¥15,800
Mexican Opal 1.639ct Loose (Contralus Opal)
Sale price¥29,800
Tibetan bicolor andesine 1.431ct loose stone
Sale price¥12,800
Sri Lankan pink star sapphire 1.021ct loose stone
Sale price¥11,000
Italian Leucite 0.287ct loose stone (play of color)
Sale price¥9,800
Italian Leucite 0.321ct loose stone (play of color)
Sale price¥11,800
Brazilian bicolor tourmaline 1.660ct loose stone
Sale price¥29,800
Tanzanian bicolor tanzanite 1.644ct rough and loose stone set of 2
Sale price¥8,800
Caribbean Conch Pearl 0.332ct Loose (Pink White)
Sale price¥29,800
Mexican Opal 8.8mm/1.640ct Loose
Sale price¥29,800
Sri Lankan bicolor sapphire 0.260ct loose stone
Sale price¥12,800
Bicolor sapphire 2.040ct loose stone
Sale price¥59,800
Brazilian bicolor tourmaline 1.020ct loose stone
Sale price¥19,800
Brazilian bicolor tourmaline 1.020ct loose stone
Sale price¥15,800
Mexican Fire Opal 8.0mm/1.270ct Loose
Sale price¥29,800
[Sakura Shape] Mexican Opal 2.551ct Loose Patch
Sale price¥59,800
[Rouge cut] Almandine garnet 2.476ct loose stone
Sale price¥9,800
Tanzanian Yellow Beryl 1.750ct Loose Stone
Sale price¥15,800
[Takeshi Yamamoto] Bicolor fluorite 15.624ct loose stone
Sale price¥45,800
[Takeshi Yamamoto] Rose quartz 25.017ct loose stone
Sale price¥59,800
[Takeshi Yamamoto] Ametrine 20.856ct loose stone
Sale price¥98,000
[Takeshi Yamamoto] Rock crystal 78.580ct loose stone
Sale price¥98,000
Myanmar spinel 0.402ct loose stone
Sale price¥12,800
Myanmar spinel 4.0mm/0.263ct loose stone
Sale price¥7,980
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
Sri Lankan Yellow Sapphire 0.253ct Loose
Sale price¥8,800
Sri Lankan Yellow Sapphire 0.226ct Loose
Sale price¥8,800
Sri Lankan Yellow Sapphire 0.272ct Loose (Bicolor)
Sale price¥12,800
Sri Lankan Yellow Sapphire 0.543ct Loose
Sale price¥29,800
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.