Angola Green Diamond Rough (Sawable) 0.528ct Rough (with Trigon)
Sale price¥198,000
Colombian oil-free emerald 0.220ct loose GIA
Sale price¥248,000
![[On Sale 2/6 at 10pm] Colombian Oil-Free Emerald 0.510ct Loose GIA](http://store.karatz.jp/cdn/shop/files/P6095155_97466828-4631-4e90-b4ca-7ff6f8853a18.jpg?v=1686868907&width=3464)
[On Sale 2/6 at 10pm] Colombian Oil-Free Emerald 0.510ct Loose GIA
Sale price¥598,000
Colombian pyrite emerald 8.044ct loose stone
Sale price¥188,000
Loose Pink Diamond, 2.5mm/0.097ct (FANCY PINK, SI2, Princess Cut)
Sale price¥148,000
![[Available at 10 PM on 2/6] Unheated Pigeon Blood Ruby 5.0mm/0.520ct Loose Stone AIGS](http://store.karatz.jp/cdn/shop/files/P1295002_a4c07bbc-fed4-4b03-8a63-aea5e7294089.jpg?v=1770241925&width=4000)
Bulgarian green sphalerite 9.2mm/3.608ct loose Japanese-German edition
Sale price¥398,000
Rubellite 7.068ct loose Japanese-German book
Sale price¥498,000
Brazilian unheated particolor Paraiba tourmaline 0.84ct loose GIA
Sale price¥2,580,000
![[On Sale 3/11 at 10 PM] Brazilian Unheated Pink Imperial Topaz (Sherry Pink) 2.221ct Loose Stone with Certificate of Authenticity](http://store.karatz.jp/cdn/shop/files/P1200748_87a01ba7-71ef-4c0c-83fb-cdb5b6d9cf9a.jpg?v=1773094020&width=4000)
Paraiba tourmaline from Brazil 0.132ct loose (CuO:2.1%.MnO:2.2%)
Sale price¥188,000
![[On Sale at 10 PM on January 14th] American Benitoite 0.257ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P9194879_e20a24ed-de0d-4a74-af90-af31a20e1607.jpg?v=1768278433&width=3213)
[On Sale at 10 PM on January 14th] American Benitoite 0.257ct Loose Stone
Sale price¥158,000
Sri Lankan Zircon Cat's Eye 23.767ct Loose
Sale price¥398,000
Sri Lankan star sapphire 12.679ct loose
Sale price¥158,000
![[1/3 22:00 Sale] Colombian Trapiche Emerald 2.318ct Loose](http://store.karatz.jp/cdn/shop/files/PC105337_e39d1703-b14f-4f9f-a6ca-66e084772758.jpg?v=1767139580&width=3038)
[1/3 22:00 Sale] Colombian Trapiche Emerald 2.318ct Loose
Sale price¥158,000
Brazilian bicolor tourmaline 7.268ct loose stone
Sale price¥158,000
Zambian bicolor tourmaline 6.536ct loose stone
Sale price¥128,000
Purple Diamond 0.070ct Loose (FANCY VIVID PINK PURPLE, I-1)
Sale price¥188,000
Paraiba Tourmaline from Mozambique 2.037ct loose stone with gem analysis
Sale price¥498,000
Colombian pyrite in emerald 4.592ct loose
Sale price¥110,000
Bicolor tourmaline 22.088ct loose
Sale price¥298,000
American oil-free red beryl 0.060ct loose GIA
Sale price¥128,000
Silky pink sapphire from Madagascar, 1.050ct loose, GIT
Sale price¥128,000
Tanzanian Wurtzite 0.567ct Loose Stone, Japan-Germany Exchange
Sale price¥198,000
Unheated Pigeon Blood Ruby from Myanmar, 0.640ct Loose, AIGS
Sale price¥258,000
Bicolor tourmaline 5.825ct loose
Sale price¥128,000
Rhodochrosite 1.884ct loose from Detroit City, USA
Sale price¥188,000
Parasite Peridot (Paracytic Peridot) 0.541ct Loose Japanese-German Edition
Sale price¥256,000
Bicolor Benitoite 0.194ct loose (square cut)
Sale price¥128,000
Colombian pyrite in emerald 7.836ct loose
Sale price¥398,000
American Benitoite 0.185ct Loose Stone
Sale price¥128,000
Tanzanian kornerupine (total 1.151ct) 9-stone half eternity ring set (3.0mm)
Sale price¥128,000
Tanzanian kornerupine (total 1.103ct) 9-stone half eternity ring set (3.0mm)
Sale price¥118,000
Brazilian Paraiba tourmaline 0.170ct loose stone (CuO: 2.1%, MnO: 1.1%)
Sale price¥298,000
Russian Demantoid Garnet (Horsetail) 0.487ct Loose Stone
Sale price¥110,000
American Benitoite 0.262ct loose stone
Sale price¥128,000
Brazilian Aquamarine 8.858ct Loose Stone
Sale price¥198,000
[Posted 12543723] Hemimorphite 64.144ct loose
Sale price¥198,000
Green Zoisite 3.617ct loose
Sale price¥118,000
Pink zoisite from Tanzania 6.7mm/1.393ct loose (peach tanzanite)
Sale price¥128,000
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.