Mongolian bicolor andesine (color change andesine) 1.305ct loose stone
Sale price¥15,800
Mozambique Elbaite Tourmaline 1.793ct Loose Stone
Sale price¥49,800
Madagascar sphene 0.838ct loose stone
Sale price¥12,800
Almandine Garnet 1.049ct Loose Stone
Sale price¥15,800
Tanzanian Chrome Tourmaline 0.753ct Loose Stone
Sale price¥6,980
Bicolor Tanzanite 1.677ct rough stone
Sale price¥8,800
Mica in Quartz 0.710ct Loose
Sale price¥5,980
Mica in Quartz 0.594ct loose stone
Sale price¥5,980
Australian black opal 0.650ct loose
Sale price¥18,800
Unheated color change sapphire 1.070ct loose stone
Sale price¥158,000
Sri Lankan Twin Star Sapphire 2.443ct Loose
Sale price¥128,000
Ukrainian bicolor topaz 5.622ct loose stone
Sale price¥198,000
Oregon Sunstone 0.575ct loose
Sale price¥12,800
Oregon sunstone 0.390ct loose
Sale price¥14,800
Sunstone (Illusion Sunstone) 0.553ct Loose
Sale price¥8,800
South African Sugilite 0.814ct loose stone
Sale price¥14,800
Sri Lankan Twin Star Sapphire 2.895ct Loose
Sale price¥69,800
Spanish Andalusite 0.440ct loose stone
Sale price¥8,800
Spanish Andalusite 0.435ct loose stone
Sale price¥8,800
Colombian Trapiche emerald 0.611ct rough stone
Sale price¥69,800
Diamond rough stone 0.967ct
Sale price¥5,980
Diamond rough stone 1.293ct
Sale price¥5,980
Sri Lankan Star Sapphire 2.093ct Loose
Sale price¥9,800
Sri Lankan Star Sapphire 1.682ct Loose
Sale price¥15,800
Sri Lankan Star Sapphire 1.225ct Loose
Sale price¥15,800
Bicolor Zoisite 1.100ct Loose Stone (Bicolor Tanzanite)
Sale price¥19,800
Namibian Hemimorphite 0.736ct Loose Stone
Sale price¥8,800
Namibian Hemimorphite 0.615ct Loose Stone
Sale price¥7,980
Nepalese bicolor kyanite 0.987ct loose stone
Sale price¥9,800
Bicolor Fluorite 0.582ct Loose
Sale price¥5,980
Bicolor Fluorite 0.528ct Loose
Sale price¥6,980
Mexican Opal 0.499ct Loose
Sale price¥5,980
Green tourmaline 0.621ct loose stone
Sale price¥9,800
Green tourmaline 0.457ct loose stone
Sale price¥9,800
Diamond 0.320ct loose (D, VS2)
Sale price¥79,800
Afghanistan Hackmanite 0.418ct loose stone
Sale price¥12,800
Australian Opal 0.760ct Loose
Sale price¥12,800
Australian Opal 0.440ct Loose
Sale price¥8,800
Zoisite 1.290ct loose stone
Sale price¥19,800
YAG (Yttrium Aluminum Garnet) 1.171ct loose stone
Sale price¥14,800
Brazilian Paraiba tourmaline in quartz 0.871ct loose
Sale price¥18,800
Tanzanian Kornerupine Cat's Eye 1.331ct Loose Stone
Sale price¥7,980
Mica in Quartz 0.760ct Loose
Sale price¥6,980
Mica in Quartz 0.588ct Loose Stone
Sale price¥6,980
Mica in Quartz 0.544ct Loose Stone
Sale price¥6,980
Mexican egg-in-opal 1.243ct loose stone
Sale price¥14,800
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.