Brazilian Sky Blue Topaz (untreated) 1.470ct loose stone
Sale price¥12,800
Brazilian Blue Topaz 2.912ct Loose
Sale price¥12,800
Russian Diopside 0.402ct Loose Stone
Sale price¥8,800
Bicolor tourmaline 1.833ct loose
Sale price¥18,800
Pt900 Kashmir unheated sapphire 1.14ct / diamond 0.70ct ring GIA
Sale price¥1,580,000
Brazilian Green Tourmaline 42.854ct Loose Stone
Sale price¥198,000
Brazilian Dumortierite in Quartz 2.551ct Loose Stone
Sale price¥19,800
Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.441ct Loose Stone
Sale price¥22,800
Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.568ct Loose Stone
Sale price¥22,800
Brazilian bicolor tourmaline 0.644ct loose stone
Sale price¥9,800
Brazilian Paraiba Tourmaline in Quartz 8.0mm/1.290ct Loose Stone
Sale price¥25,800
Paraiba tourmaline from Brazil 0.038ct loose
Sale price¥19,800
Paraiba tourmaline from Brazil 0.036ct loose
Sale price¥14,800
Brazilian Tinkerbell Quartz (Pink Fire Quartz) 2.473ct Loose Stone
Sale price¥29,800
Brazilian Tinkerbell Quartz (Pink Fire Quartz) 1.819ct Loose Stone
Sale price¥29,800
Brazilian Dendritic Quartz 4.645ct Loose Stone
Sale price¥9,800
Brazilian Dendritic Quartz 3.376ct Loose Stone
Sale price¥8,800
Brazilian dendritic quartz 2.381ct loose stone
Sale price¥7,980
Brazilian dendritic quartz 2.174ct loose stone
Sale price¥6,980
Brazilian Paraiba Tourmaline in Quartz 1.271ct Loose Stone
Sale price¥22,800
Brazilian Paraiba Tourmaline in Quartz 1.571ct Loose Stone
Sale price¥29,800
Brazilian Paraiba Tourmaline in Quartz 1.618ct Loose Stone
Sale price¥25,800
Brazilian Paraiba Tourmaline in Quartz 2.403ct loose stone
Sale price¥45,800
Brazilian Paraiba Tourmaline in Quartz 1.917ct loose stone
Sale price¥42,800
Colombian Trapiche Emerald 0.712ct Loose
Sale price¥39,800
Brazilian Blue Tourmaline 0.650ct Loose
Sale price¥9,800
Brazilian bicolor tourmaline 1.953ct loose stone
Sale price¥18,800
Tanzania Color Change Chrome Tourmaline 13.194ct Loose Stone Chuhokan
Sale price¥398,000
Diamond 3.0mm/0.123ct loose stone (D, VS2, octagonal cut)
Sale price¥28,800
Tanzanian bicolor tanzanite 1.644ct rough and loose stone set of 2
Sale price¥8,800
Brazilian Pink Tourmaline 0.960ct Loose Stone
Sale price¥15,800
Brazilian bicolor tourmaline 0.763ct loose stone
Sale price¥7,980
Brazilian bicolor tourmaline 1.177ct loose stone
Sale price¥12,800
Colombian Trapiche Emerald 1.341ct Loose
Sale price¥6,980
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
Tanzanian bicolor tanzanite 3.018ct rough and loose stone set of 2
Sale price¥6,980
Brazilian bicolor tourmaline 0.914ct loose stone
Sale price¥12,800
Tanzanite from Tanzania 1.36ct loose stone
Sale price¥49,800
Pt900 Colombian emerald 0.72ct, diamond 0.61ct ring
Sale price¥158,000
Pt900/Pt850 Australian Black Opal 0.37ct Diamond 0.73ct Necklace
Sale price¥198,000
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.