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
Cambodian Blue Zircon (Ratanakiri Blue) 6.771ct Loose
Sale price¥168,000
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
Kunzite from Afghanistan 1.857ct loose stone
Sale price¥18,800
Synthetic Black Opal 5.013ct Loose
Sale price¥59,800
Sri Lankan Star Sapphire 7.976ct Loose
Sale price¥98,000
Montana Agate 6.534ct Loose Stone
Sale price¥6,980
Brazilian Green Spodumene 6.484ct Loose Stone
Sale price¥29,800
Mexican Cantera Opal 3.176ct Loose
Sale price¥39,800
Mexican Cantera Opal 2.038ct Loose
Sale price¥29,800
Mexican Cantera Opal 3.167ct loose stone (faceted cut)
Sale price¥12,800
Tibetan Andesine 2.020ct Loose Stone
Sale price¥18,800
Kunzite from Afghanistan 7.741ct loose stone
Sale price¥15,800
Synthetic black opal 2.996ct loose stone
Sale price¥29,800
[Takeshi Yamamoto] Brazilian Ametrine 24.465ct loose stone
Sale price¥98,000
Prehnite 3.016ct loose stone
Sale price¥6,980
Brazilian Medusa Quartz (Paraiba Quartz) 2.250ct Loose
Sale price¥19,800
Brazilian Limonite in Topaz 10.100ct Loose Stone
Sale price¥25,800
[Takeshi Yamamoto] Brazilian rose quartz 41.633ct loose stone
Sale price¥59,800
Brazilian Ametrine 11.843ct loose stone
Sale price¥22,800
Brazilian Dumortierite in Quartz 3.490ct loose stone
Sale price¥18,800
Brazilian bicolor tourmaline 6.227ct loose stone
Sale price¥69,800
Illusion Pink Tourmaline (Iridescent Tourmaline) 5.308ct Loose Stone
Sale price¥69,800
Illusion Pink Tourmaline (Iridescent Tourmaline) 4.172ct Loose
Sale price¥59,800
Zimbabwean Blue Apatite (UV type) 2.596ct loose stone
Sale price¥18,800
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.