Australian black opal 3.322ct loose stone
Sale price¥98,000
Brazilian Limonite in Topaz 4.743ct loose stone
Sale price¥12,800
Brazilian Indigolite Tourmaline 7.002ct Loose Stone, Japan-Germany Exchange
Sale price¥198,000
Brazilian Green Tourmaline 2.218ct Loose
Sale price¥29,800
Kunzite from Afghanistan 8.4mm/3.300ct loose stone
Sale price¥12,800
Romanesite in Quartz 4.825ct loose stone
Sale price¥12,800
Purple Zoisite 2.617ct rough stone
Sale price¥13,800
Bicolor Tanzanite 3.856ct rough stone
Sale price¥19,800
Bicolor Tanzanite 5.582ct rough stone
Sale price¥29,800
Pink amethyst 3.275ct loose stone
Sale price¥9,800
Lavender quartz (scorolite) 2.740ct loose stone
Sale price¥9,800
Brazilian Romanesite in Quartz 2.914ct loose stone
Sale price¥9,800
Cristobalite in Quartz 1.660ct Loose
Sale price¥9,800
Mexican Fire Opal 2.235ct Loose
Sale price¥26,800
Australian black opal 2.277ct loose stone (play of color on both sides)
Sale price¥34,800
Synthetic Moissanite 0.970ct Loose Stone (Blue Moissanite)
Sale price¥16,800
Brazilian dendritic quartz 3.608ct loose stone
Sale price¥9,800
Mexican bicolor Danburite 1.932ct loose stone by Nikkei
Sale price¥34,800
[Clover in cut] Emerald 9mm/2.498ct {Collaboration} Loose with patch
Sale price¥98,000
[Sakura Incut] Danburite 8.3mm/1.585ct loose with patch
Sale price¥29,800
[Koshu precious stone cutter pluethree] Colombian emerald 2.018ct loose
Sale price¥98,000
Brazilian Medusa Quartz (Paraiba Quartz) 2.524ct loose
Sale price¥35,800
Dendritic quartz 3.875ct loose
Sale price¥8,800
Watermelon tourmaline 3.403ct loose
Sale price¥5,980
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.