Brazilian Rutile Cat's Eye 3.856ct Loose Stone (Red Rutile Quartz)
Sale price¥18,800
Australian Prehnite 6.0mm/0.993ct loose stone (rose cut)
Sale price¥8,800
Australian Prehnite 6.0mm/1.004ct loose stone (rose cut)
Sale price¥8,800
Mozambique Almandine Garnet 0.477ct Loose Stone
Sale price¥8,800
Mozambique Almandine Garnet 0.774ct Loose Stone
Sale price¥8,800
Sri Lankan Blue Sapphire 4.2mm/0.333ct Loose Stone
Sale price¥12,800
Sri Lankan Blue Sapphire 4.6mm/0.396ct Loose
Sale price¥12,800
Cambodian Blue Zircon (Ratanakiri Blue) 6.771ct Loose
Sale price¥168,000
Mexican Cantera Opal 6.112ct Loose
Sale price¥59,800
![[Koshu Precious Stone Cutting] Brazilian Sky Blue Topaz 10.60ct Loose Stone [Collaboration] Patch](http://store.karatz.jp/cdn/shop/files/P5120836.jpg?v=1747480996&width=4000)
South African diamond rough stone 0.330ct
Sale price¥5,980
Brazilian Bicolor Tourmaline 4.554ct Ruth Japanese-German Edition
Sale price¥298,000
Diamond 3.3mm/0.131ct Loose (G, VS-1, EXCELLENT Heart & Cupid)
Sale price¥25,800
Brazilian Green Tourmaline Cat's Eye 5.210ct Loose Stone
Sale price¥25,800
[Takeshi Yamamoto] Brazilian Ametrine 29.930ct loose stone
Sale price¥79,800
Indian Star Garnet 14.200ct Loose Stone (6 Rows)
Sale price¥5,980
Sri Lankan bicolor sapphire 0.304ct loose stone
Sale price¥14,800
Brazilian Pink Euclase 1.259ct Loose Stone Japan-Germany
Sale price¥3,980,000
Mexican Fire Opal 1.610ct Loose (Contralus Opal)
Sale price¥19,800
Mexican Fire Opal 1.330ct Loose (Contralus Opal)
Sale price¥19,800
Australian Boulder Opal 12.220ct Loose
Sale price¥12,800
Australian Boulder Opal 15.020ct Loose
Sale price¥18,800
Australian Boulder Opal 41.770ct Loose
Sale price¥29,800
Madagascar Labradorite 0.931ct loose stone
Sale price¥8,800
Spanish Andalusite 0.74ct loose stone
Sale price¥6,980
Kunzite from Afghanistan 8.609ct loose stone
Sale price¥14,800
Australian Iron Opal 17.450ct Loose
Sale price¥12,800
Brazilian Paraiba tourmaline 0.215ct loose (CuO:1.1%, MnO:3.3%)
Sale price¥55,800
Brazilian Tinkerbell Quartz (Pink Fire Quartz) 4.670ct Loose Stone
Sale price¥18,800
Thai Pigeon Blood Ruby 0.380ct Loose AIGS
Sale price¥59,800
Burmese Ruby 3.725ct Loose GIA & Chuho
Sale price¥198,000
Myanmar Musgravite 0.214ct Loose Stone Nikko Kan
Sale price¥258,000
Mexican Danburite 6.780ct loose stone (light pink)
Sale price¥25,800
Tibetan Andesine 0.720ct Loose Stone
Sale price¥5,980
Myanmar Musgravite/Spinel 8.005ct Loose Stone Japan-Germany
Sale price¥98,000
Tibetan Andesine 2.450ct Loose Stone
Sale price¥12,800
Brazilian cat's eye emerald 4.070ct loose stone
Sale price¥198,000
Ethiopian Opal 1.014ct Loose
Sale price¥3,980
Ethiopian Opal 1.521ct Loose
Sale price¥3,980
Colombian mica in emerald 1.940ct loose
Sale price¥49,800
Congo hemimorphite 9.849ct loose stone
Sale price¥49,800
Madagascar Bicolor Sapphire 0.626ct Loose
Sale price¥29,800
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.
業界発展のための後進育成や事業協力、宝石の国スリランカの子どもたちへの支援活動など、KARATZの取り組みについてご紹介いたします。
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.