Oval Cut
Tanzanian Kornerupine 0.199ct loose stone
Sale price¥19,800
Tanzanian Kornerupine 0.172ct loose stone
Sale price¥18,800
Tanzanian Kornerupine 0.212ct loose stone
Sale price¥19,800
Tanzanian Mandarin Garnet 0.359ct Loose Stone
Sale price¥22,800
Paraiba tourmaline from Brazil 0.018ct loose
Sale price¥14,800
Paraiba tourmaline from Brazil 0.023ct loose
Sale price¥19,800
Tanzanian Kornerupine 0.391ct loose stone
Sale price¥39,800
Australian black opal 0.388ct loose stone
Sale price¥12,800
Mexican Fire Opal 0.599ct Loose
Sale price¥6,980
Myanmar Lavender Jade (Jadeite) 4.907ct Loose Stone
Sale price¥19,800
Paraiba tourmaline from Brazil 0.071ct loose
Sale price¥25,800
Manganotantalite from Afghanistan 1.868ct loose stone
Sale price¥69,800
Myanmar Star Spinel 2.030ct Loose
Sale price¥79,800
Mozambique pink spinel 0.670ct loose stone
Sale price¥29,800
Sri Lankan Star Sapphire 6.477ct Loose
Sale price¥49,800
Sri Lankan Star Sapphire 7.111ct Loose
Sale price¥59,800
German Awinite 0.064ct loose stone
Sale price¥18,800
Colombian pyrite emerald 3.817ct loose stone
Sale price¥79,800
Sillimanite from Sri Lanka 1.704ct loose stone
Sale price¥19,800
Sri Lankan Blue Sapphire (Ice Blue) 0.584ct Loose
Sale price¥9,800
0.165ct Unheated Silky Pink Sapphire from Vietnam
Sale price¥6,980
Tanzanian Chrome Tourmaline 0.728ct Loose Stone
Sale price¥7,980
Tanzanian Chrome Tourmaline 0.760ct Loose Stone
Sale price¥6,980
Myanmar Purple Spinel 0.650ct Loose
Sale price¥12,800
Australian black opal 3.027ct loose stone
Sale price¥15,800
Brazilian Flower Quartz 7.064ct Loose Stone
Sale price¥17,800
American Peridot 0.339ct Loose Stone
Sale price¥6,980
Brazilian Paraiba Tourmaline 0.177ct loose stone (CuO: 2.1%, MnO: 1.3%)
Sale price¥45,800
Unheated Brazilian Paraiba Tourmaline 0.025ct loose stone
Sale price¥39,800
Unheated Brazilian Paraiba Tourmaline 0.038ct loose stone
Sale price¥59,800
Australian black opal 0.650ct loose
Sale price¥18,800
Mexican Opal 1.666ct Loose
Sale price¥14,800
Sri Lankan Cobalt Spinel 0.676ct Loose Stone (Blue Spinel) Nikkei
Sale price¥79,800
Brazilian Paraiba Tourmaline 0.216ct loose stone (CuO:1.2%, MnO:2.7%)
Sale price¥69,800
Unheated Brazilian Paraiba Tourmaline 0.110ct Loose Stone AIGS
Sale price¥258,000
Zimbabwean Euclase 0.058ct loose stone
Sale price¥39,800
Benitoite 0.231ct loose
Sale price¥220,000
Benitoite 0.286ct loose
Sale price¥258,000
Ruby 0.242ct loose stone
Sale price¥14,800
Ruby 0.110ct loose
Sale price¥9,800
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.