Fire opal 1.360ct loose
Sale price¥9,800
Russian demantoid garnet (horsetail recognized) 5.8mm/0.876ct loose
Sale price¥258,000
Spinel 0.705ct loose (rose cut)
Sale price¥6,980
Purple spinel 0.424ct loose (rose cut)
Sale price¥6,980
Pink tourmaline 0.391ct loose
Sale price¥4,980
Sealight 2.666ct loose
Sale price¥18,800
[Mr. NOBU] Green Opal from Amazon [Collaboration] 6.8mm loose
Sale price¥6,980
[Cat cut] Amazon green opal 6.5mm/0.580ct loose
Sale price¥6,980
Red beryl 0.181ct loose
Sale price¥29,800
Rutilated Quartz (Rutilated Quartz) 82.385ct Loose Stone, Japan-Germany
Sale price¥29,800
Sealight (Shealight) 1.940ct loose
Sale price¥15,800
Afghanistan Clinozoisite 1.810ct Loose Stone (Phantom Cut)
Sale price¥8,800
Sri Lankan saffron 0.116ct loose stone with certificate of authenticity
Sale price¥25,800
Brazilian Indigolite Tourmaline 0.609ct Loose Stone JTL
Sale price¥25,800
Tanzanian Almandine Garnet 2.992ct Loose Stone, Japan-Germany Exchange
Sale price¥15,800
Tanzanian Sunstone 1.599ct Loose Stone
Sale price¥9,800
Brazilian Goshenite 0.259ct loose stone
Sale price¥6,980
Brazilian Green Spodumene 2.029ct Loose Stone
Sale price¥12,800
Brazilian Imperial Topaz 0.563ct Loose Stone
Sale price¥15,800
Tanzanian Rhodolite Garnet 0.801ct Loose Stone
Sale price¥9,800
Tanzanian Rhodolite Garnet 0.405ct Loose Stone
Sale price¥6,980
![[Koshu Precious Stone Cut Glass] 18K Rose Quartz 15.964ct Necklace by Nikko Kan](http://store.karatz.jp/cdn/shop/files/collage_d84ee95a-a8cb-4c55-ad00-cb80887f2365.png?v=1757162335&width=2000)
Chinese Cinnabar 0.549ct Loose Stone with Certificate of Authenticity
Sale price¥19,800
Synthetic Alexandrite 1.538ct Loose Stone
Sale price¥29,800
1.476ct loose sphalerite from Spain
Sale price¥29,800
Colombian emerald 0.101ct loose stone
Sale price¥15,800
Blue sapphire 4.0mm/0.314ct loose stone
Sale price¥112,800
Tanzanian Dragon Garnet 0.829ct Loose Stone
Sale price¥22,800
Tanzanian Dragon Garnet 1.019ct Loose Stone
Sale price¥25,800
Tanzanian Dragon Garnet 0.754ct Loose Stone
Sale price¥19,800
Zimbabwean Bicolor Euclase 0.183ct Loose Stone
Sale price¥49,800
Zimbabwean Bicolor Euclase 0.197ct Loose Stone
Sale price¥39,800
Paraiba tourmaline from Mozambique 0.154ct loose stone
Sale price¥19,800
Tanzanian magnesioaxinite 0.380ct loose stone, Japan-Germany Quantity
Sale price¥39,800
Fire Opal 2 Stone Pair 4mm/0.336ct Loose
Sale price¥3,980
Oligoclase Sunstone 26.660ct rough stone
Sale price¥15,800
Red beryl 0.109ct loose
Sale price¥18,800
Montebrasite 4.1mm 2 stone pair loose (green)
Sale price¥6,980
[Posted 12529980] Paraiba tourmaline from Brazil 1.649ct loose
Sale price¥18,800
Particolor tourmaline 24.147ct loose
Sale price¥49,800
Emerald 15.219ct loose Japanese-German book
Sale price¥298,000
Aragonite 2.088ct loose Japanese-German book
Sale price¥25,800
Bicolor Sphene 4.50ct loose
Sale price¥258,000
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.