Australian boulder opal 4.470ct loose
Sale price¥29,800
Color change sphene from Pakistan 7.137ct loose
Sale price¥198,000
Sphene from Madagascar 1.229ct loose
Sale price¥59,800
Bicolor sphene from Madagascar 1.242ct loose
Sale price¥59,800
Brazilian Paraiba tourmaline in quartz 2.954ct loose
Sale price¥45,800
Labradorite Moonstone 1.598ct Loose Stone Japanese-German
Sale price¥9,800
Beryl 6.5mm/1.032ct loose stone
Sale price¥12,800
Beryl 0.951ct loose
Sale price¥12,800
Myanmar purple spinel 0.750ct loose
Sale price¥8,800
Kunzite from Afghanistan 32.795ct loose
Sale price¥65,800
Sri Lankan star sapphire 21.730ct loose
Sale price¥69,800
Purple Diamond 0.070ct Loose (FANCY VIVID PINK PURPLE, I-1)
Sale price¥188,000
Tanzanite 1.297ct loose
Sale price¥12,960
Tanzanite 1.593ct loose
Sale price¥15,800
Red beryl 0.120ct loose
Sale price¥36,800
Brazilian Euclase 0.610ct loose
Sale price¥9,800
Brazilian Euclase 1.240ct loose
Sale price¥22,800
Red beryl 0.104ct loose
Sale price¥34,800
Sri Lankan Goethite Into Topaz 3.200ct loose
Sale price¥7,980
Australian boulder opal 6.980ct loose
Sale price¥7,980
Australian boulder opal 1.730ct loose
Sale price¥9,800
Mexican cantera opal 7.563ct loose
Sale price¥19,800
Mexican cantera opal 9.422ct loose
Sale price¥29,800
Mexican cantera opal 15.542ct loose
Sale price¥19,800
Yellow diamond rough stone (makeable) 0.247ct rough stone
Sale price¥22,800
Chrome tourmaline 0.300ct loose stone
Sale price¥3,980
Dendritic Agate 31.019ct Ruth Japanese/German
Sale price¥9,800
Spanish bicolor sphalerite 6.230ct loose
Sale price¥79,800
Bicolor tanzanite 0.581ct loose
Sale price¥23,800
Brazilian alexandrite 0.112ct loose
Sale price¥13,800
Bicolor Zoisite 0.581ct loose
Sale price¥15,800
Tanzania Kyanite 0.856ct loose stone
Sale price¥4,980
Pink tourmaline 1.690ct loose
Sale price¥39,800
Brazilian dumortierite in quartz 4.592ct loose
Sale price¥15,800
Bicolor grossular garnet from Tanzania 2.454ct loose
Sale price¥12,800
Kunzite from Afghanistan 26.784ct loose
Sale price¥69,800
[Mr. Takeshi Yamamoto] Rock crystal 43.123ct loose
Sale price¥25,800
Bicolor chrysoberyl from Madagascar 1.520ct loose
Sale price¥22,800
Bicolor chrysoberyl from Madagascar 1.456ct loose
Sale price¥21,800
Bicolor chrysoberyl from Madagascar 1.003ct loose
Sale price¥15,800
Bicolor chrysoberyl from Madagascar 1.590ct loose
Sale price¥23,800
Bicolor chrysoberyl from Madagascar 1.753ct loose
Sale price¥26,800
Brazilian Alexandrite 0.244ct Ruth (Hemachita Mine)
Sale price¥59,800
Sphene from Madagascar 1.853ct loose
Sale price¥24,800
Tanzanian orange zircon 3.804ct loose
Sale price¥39,800
Bicolor sapphire 0.190ct loose
Sale price¥6,980
Bicolor sapphire 0.207ct loose
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.