Oregon Sunstone 2.120ct loose
Sale price¥25,800
Mexican Topaz 1.66ct Loose Stone
Sale price¥15,800
Cambodian Zircon 1.860ct Loose
Sale price¥12,800
Topaz 1.680ct loose stone
Sale price¥18,800
Burmese red spinel 0.418ct loose
Sale price¥55,800
Afghanite 0.496ct loose Japanese-German book
Sale price¥9,800
Purple sapphire 0.240ct loose
Sale price¥4,980
Purple sapphire 0.220ct loose
Sale price¥3,980
Purple sapphire 0.313ct loose
Sale price¥6,980
Color change Andesine 1.67ct loose
Sale price¥25,800
Bicolor tourmaline 0.780ct loose
Sale price¥9,800
Color change Andesine 1.90ct loose
Sale price¥29,800
Bicolor tourmaline 1.050ct loose
Sale price¥8,800
YAG (yttrium aluminum garnet) 7.3mm./2.150ct loose
Sale price¥12,800
YAG (yttrium aluminum garnet) 7.5mm/2.410ct loose
Sale price¥12,800
YAG (yttrium aluminum garnet) 1.870ct loose
Sale price¥9,800
Aquamarine 68.040ct loose
Sale price¥39,800
Unheated sapphire 2.430ct loose GIA
Sale price¥298,000
Russian demantoid garnet (horsetail recognized) 3.2mm/0.175ct loose
Sale price¥15,800
Aquamarine 15mm/10.190ct loose
Sale price¥69,800
Russian demantoid garnet (horsetail recognized) 4.4mm/0.382ct loose
Sale price¥79,800
Russian demantoid garnet (horsetail recognized) 4.6mm/0.425ct loose
Sale price¥69,800
Bicolor spinel 1.040ct loose (gray/purple)
Sale price¥69,800
Red beryl 0.098ct loose
Sale price¥18,800
Montebrasite 0.370ct loose (green)
Sale price¥3,980
Yellow diamond 2.6mm loose (equivalent to VS class)
Sale price¥12,800
Red beryl 0.310ct loose
Sale price¥39,800
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.