Custom Cut
Tibetan Andesine 0.768ct Loose Stone
Sale price¥12,800
Tanzanian mint diopside 0.364ct loose stone
Sale price¥9,800
Brazilian Kasharai Amethyst 5.6mm/0.460ct Loose Stone
Sale price¥8,800
[11/18 22:00] Oregon Sunstone from the United States, 0.386ct Loose
Sale price¥24,800
Brazilian Amethyst 5.883ct Loose Stone
Sale price¥9,800
Pakistani Ludwigite Peridot 0.615ct Loose Stone
Sale price¥7,980
2.472ct loose Larimar from the Dominican Republic
Sale price¥6,980
2.568ct loose Larimar from the Dominican Republic
Sale price¥8,800
Brazilian Color-Shifting Amethyst 0.849ct Loose Stone
Sale price¥8,800
Brazilian Morganite 0.484ct loose stone
Sale price¥12,800
Australian Prehnite 1.758ct loose stone
Sale price¥9,800
Sri Lankan Peristerite 0.272ct Loose Stone
Sale price¥11,000
[12549595 published] Goshenite 1.080ct loose
Sale price¥8,800
Brazilian Aquamarine 8.858ct Loose Stone
Sale price¥198,000
Mexican Cantera Opal 14.690ct Loose
Sale price¥12,800
Indian moonstone 1.046ct loose stone
Sale price¥9,800
Indian Moonstone 9.3mm/2.693ct Loose Stone
Sale price¥9,800
Cambodian colorless zircon 0.630ct loose stone
Sale price¥8,800
Brazilian Petalite 0.725ct Loose Stone
Sale price¥4,980
Tanzanian purple sapphire 0.355ct loose stone
Sale price¥9,800
Australian Opal 0.374ct Loose
Sale price¥6,980
Mexican Cantera Opal 1.120ct Loose
Sale price¥8,800
Brazilian Lavender Quartz (Scorolite) 0.797ct Loose Stone
Sale price¥7,980
Brazilian pink tourmaline 0.385ct loose stone
Sale price¥7,980
Australian Prehnite 0.707ct loose stone
Sale price¥6,980
Mongolian Bicolor Andesine 0.944ct Loose Stone
Sale price¥15,800
Brazilian Fluorite Quartz 3.962ct Loose Stone
Sale price¥24,800
American Anthill Garnet 0.822ct Loose Stone
Sale price¥19,800
Cat Cut (Leopard Print) Amber 0.906ct Loose Stone
Sale price¥9,800
Tanzanian Almandine Garnet 2.992ct Loose Stone, Japan-Germany Exchange
Sale price¥15,800
Tanzanian Sunstone 1.599ct Loose Stone
Sale price¥9,800
Brazilian Elestial Amethyst 0.809ct Loose Stone
Sale price¥6,980
Brazilian Elestial Amethyst 0.673ct Loose Stone
Sale price¥9,800
Brazilian Elestial Amethyst 0.482ct Loose Stone
Sale price¥4,980
Colombian mint-colored emerald 0.214ct loose stone
Sale price¥8,800
Zambian emerald 0.159ct loose stone
Sale price¥8,800
Zambian emerald 0.135ct loose stone
Sale price¥8,800
Brazilian mint color tourmaline 0.145ct loose stone
Sale price¥8,800
Brazilian green tourmaline 0.194ct loose stone
Sale price¥12,800
Brazilian green tourmaline 0.755ct loose stone
Sale price¥18,800
Brazilian Dumortierite in Quartz 0.978ct Loose Stone
Sale price¥12,800
Blue sapphire 0.295ct loose stone
Sale price¥7,980
[Shinjuku Marui Annex 202511] Madagascar Blue Sapphire 0.266ct Loose
Sale price¥8,800
Sri Lankan Yellow Sapphire 0.300ct Loose
Sale price¥15,800
Pakistani Peridot 0.361ct Loose Stone
Sale price¥4,980
Pakistani Peridot 0.408ct Loose Stone
Sale price¥6,980
American Peridot 0.458ct Loose Stone
Sale price¥6,980
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.