Mexican Hyalite Opal 1.587ct Loose
Sale price¥9,800
Nigerian green beryl 0.437ct loose stone
Sale price¥9,800
Brazilian Paraiba tourmaline 181.342ct raw stone
Sale price¥9,800
Paraiba tourmaline 233.409ct raw stone from Brazil
Sale price¥12,800
Playnight 5.099ct loose
Sale price¥5,980
Bicolor tourmaline 1.440ct loose
Sale price¥9,800
Bicolor tourmaline 1.704ct loose
Sale price¥12,800
[Koshu Precious Stones plusthree] Picture Agate 10.362ct Loose Stone
Sale price¥29,800
Mexican fire opal 6mm/0.698ct loose (rose cut)
Sale price¥14,800
American Benitoite 2.8mm/0.104ct Loose Stone
Sale price¥28,800
American Benitoite 0.100ct Loose Stone (Emerald Cut)
Sale price¥32,800
Australian boulder opal 14.860ct loose
Sale price¥18,800
Brazilian Green Beryl Cat's Eye 0.559ct Loose Stone
Sale price¥5,980
Brazilian green beryl cat's eye 1.022ct loose
Sale price¥8,800
Mexican Fire Opal 1.808ct Loose (Contralus Opal)
Sale price¥35,800
Mexican Fire Opal 1.624ct Loose (Contralus Opal)
Sale price¥12,800
Mexican Fire Opal 5mm/0.342ct Loose (Contralus Opal)
Sale price¥9,800
Paraiba tourmaline from Mozambique 1.481ct loose (CuO:0.3%, MnO:4.3%)
Sale price¥158,000
American Benitoite 0.158ct loose stone
Sale price¥59,800
American Benitoite 0.296ct loose stone
Sale price¥148,000
Pt950 American Benitoite 0.14ct / Diamond 0.22ct Ring
Sale price¥98,000
Brazilian bicolor tourmaline 0.880ct loose stone
Sale price¥12,800
[Koshu Precious Stone Cutting] Mexican Fire Opal 1.571ct Loose Patch
Sale price¥69,800
Brazilian Unheated Bicolor Paraiba Tourmaline 0.105ct Loose GIA
Sale price¥198,000
Brazilian Swiss Blue Topaz 1.062ct Loose Stone
Sale price¥9,800
Blue beryl (Macis beryl) 0.181ct loose stone
Sale price¥12,800
Mexican Fire Opal (Faceted Cut) 0.844ct Loose
Sale price¥15,800
Bicolor Fluorite 24.682ct Loose
Sale price¥29,800
Mexican Hyalite Opal 0.942ct Loose
Sale price¥9,800
Mexican Hyalite Opal 6.0mm/0.708ct Loose
Sale price¥25,800
American Red Beryl 0.217ct Loose
Sale price¥49,800
Brazilian Paraiba tourmaline 0.171ct loose stone (CuO: 1.7%, MnO: 2.3%)
Sale price¥98,000
Phosphophyllite rough stone (59.5 x 35.9 x 36 mm)
Sale price¥298,000
Brazilian bicolor tourmaline 13.927ct loose stone
Sale price¥198,000
Brazilian bicolor tourmaline 0.572ct loose stone (rose cut)
Sale price¥14,800
Brazilian Bicolor Tourmaline 0.901ct Loose Stone (Rose Cut)
Sale price¥12,800
Pezzotite from Madagascar 0.257ct loose
Sale price¥15,800
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.