Colombian Euclase from Colombia 4.869ct loose
Sale price¥55,800
Bicolor imperial topaz 1.725ct loose
Sale price¥79,800
South African green diamond rough (makeable) 0.298ct loose
Sale price¥69,800
Tanzanite 2.418ct loose
Sale price¥55,800
Dioptase from Namibia 3.2mm/0.123ct loose
Sale price¥59,800
Black opal 2.293ct loose
Sale price¥98,000
Bicolor apatite 15.507ct loose
Sale price¥98,000
Cambodian Blue Zircon (Ratanakiri Blue) 2.607ct Loose Stone
Sale price¥59,800
Rhodochrosite from South Africa 5.2mm/0.645ct loose
Sale price¥55,800
Russian demantoid garnet (horsetail recognized) 4.5mm/0.423ct loose
Sale price¥69,800
Kunzite from Afghanistan 21.5mm/39.372ct loose stone
Sale price¥98,000
Pakistani Veirinite 0.206ct loose stone
Sale price¥55,800
Zimbabwe bicolor euclase 0.385ct loose stone
Sale price¥98,000
Tanzanian Lavender Tanzanite 2.219ct Loose Stone
Sale price¥55,800
American Benitoite 0.158ct loose stone
Sale price¥59,800
Colombian emerald 0.202ct loose stone
Sale price¥59,800
Cinnabar rough stone (38.1 x 28.8 x 22.4 mm)
Sale price¥98,000
0.167 ct Loose Benitoite from the USA, with identification certificate
Sale price¥59,800
Spanish Sphalerite 12.5mm/9.860ct Loose Stone
Sale price¥98,000
Pakistani Lazurite (Azurite) 0.290ct loose stone
Sale price¥98,000
Sri Lankan bicolor sapphire 1.020ct loose stone
Sale price¥59,800
Colombian emerald 0.203ct loose stone with certificate
Sale price¥98,000
Sri Lankan Cat's Eye Sapphire 2.177ct Loose
Sale price¥98,000
Brazilian Santa Maria Aquamarine 0.968ct loose stone
Sale price¥69,800
Myanmar color change zircon 0.720ct loose stone
Sale price¥69,800
Brazilian Rubellite 2.439ct loose stone
Sale price¥69,800
American Red Beryl 0.254ct Loose
Sale price¥59,800
American Red Beryl 0.260ct Loose
Sale price¥69,800
Brazilian unheated pink imperial topaz (sherry pink) 0.931ct loose stone
Sale price¥98,000
Zimbabwe bicolor euclase 0.205ct loose stone
Sale price¥98,000
[Takeshi Yamamoto] Brazilian Ametrine 29.930ct loose stone
Sale price¥79,800
Synthetic Black Opal 5.013ct Loose
Sale price¥59,800
American Benitoite 3.5mm/0.192ct Loose Stone (Contains Minerals)
Sale price¥69,800
Sri Lankan Star Sapphire 7.976ct Loose
Sale price¥98,000
Pakistani Lazurite (Azurite) 4.1mm/0.318ct Loose Stone
Sale price¥59,800
[Takeshi Yamamoto] Brazilian Ametrine 24.465ct loose stone
Sale price¥98,000
Pt950 Colombian Euclase 0.07ct Diamond Ring
Sale price¥89,800
Zimbabwean Euclase 0.107ct loose stone
Sale price¥79,800
Tanzania Magnesioaxinite 0.198ct loose stone by Nikkei
Sale price¥69,800
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.