Australian boulder opal 9.120ct loose
Sale price¥98,000
Brazilian Fluorite Quartz 3.962ct Loose Stone
Sale price¥24,800
Oligoclase Sunstone 6.432ct Loose Stone
Sale price¥25,800
Brazilian Elestial Amethyst 3.093ct Loose Stone
Sale price¥19,800
Brazilian Elestial Amethyst 2.353ct Loose Stone
Sale price¥15,800
Mexican Cantera Opal 5.882ct Loose
Sale price¥39,800
Colombian emerald, 17.581ct rough, Japan-Germany kanji
Sale price¥45,800
Brazilian Tinkerbell Quartz (Pink Fire Quartz) 4.156ct Loose Stone
Sale price¥18,800
Mexican Cantera Opal 4.456ct Loose
Sale price¥39,800
Brazilian Green Spodumene 2.433ct Loose Stone
Sale price¥18,800
Brazilian Green Spodumene 2.710ct Loose Stone
Sale price¥18,800
Mexican Cantera Opal 8.331ct Loose
Sale price¥39,800
Mexican Cantera Opal 11.885ct Loose
Sale price¥49,800
Brazilian bicolor topaz 3.098ct loose stone
Sale price¥29,800
Bicolor Fluorite 24.682ct Loose
Sale price¥29,800
Brazilian Green Tourmaline 3.943ct Loose Stone
Sale price¥39,800
[Takeshi Yamamoto] Brazilian Rock Crystal 12.725ct Loose
Sale price¥39,800
Brazilian bicolor tourmaline 13.927ct loose stone
Sale price¥198,000
Brazilian chlorite in quartz 27.725ct loose stone
Sale price¥19,800
Brazilian Morganite 2.183ct loose stone
Sale price¥29,800
Colombian fluorite 6.327ct loose stone
Sale price¥25,800
Colombian fluorite 5.903ct loose stone
Sale price¥18,800
Brazilian bicolor topaz 2.618ct loose stone (untreated)
Sale price¥18,800
Oligoclase Sunstone 15mm/10.593ct Loose
Sale price¥15,800
Spanish Sphalerite 12.5mm/9.860ct Loose Stone
Sale price¥98,000
Nigerian Morganite 2.745ct loose stone
Sale price¥12,800
Madagascar Iolite 3.129ct loose stone
Sale price¥39,800
Brazilian Green Tourmaline 1.431ct Loose Stone
Sale price¥12,800
Bicolor Sapphire 5.640ct Loose Stone with Certificate
Sale price¥98,000
Brazilian Green Tourmaline 4.613ct Loose Stone
Sale price¥39,800
Dendritic Opal 3.041ct Loose
Sale price¥18,800
Sri Lankan zircon 3.614ct loose stone
Sale price¥29,800
Afghanistan Lazurite in Sodalite 2.387ct Loose Stone
Sale price¥39,800
Brazilian Rubellite 2.439ct loose stone
Sale price¥69,800
Moloxite (Green Apatite) from Madagascar 4.087ct Loose Stone
Sale price¥39,800
Brazilian rutilated quartz (rutilated quartz) 7.741ct loose stone
Sale price¥15,800
[Takeshi Yamamoto] Bicolor Smoky Quartz 10.674ct Loose Stone
Sale price¥39,800
Kunzite from Afghanistan 8.609ct loose stone
Sale price¥14,800
[Takeshi Yamamoto] Brazilian Ametrine 29.930ct loose stone
Sale price¥79,800
Mexican Cantera Opal 6.112ct Loose
Sale price¥59,800
Mexican Cantera Opal 14.458ct loose stone (faceted cut)
Sale price¥14,800
Brazilian Paraiba Tourmaline in Quartz 3.046ct loose stone
Sale price¥45,800
Australian white opal 2.318ct loose
Sale price¥12,800
Synthetic Black Opal 5.013ct Loose
Sale price¥59,800
Sri Lankan Star Sapphire 7.976ct Loose
Sale price¥98,000
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.