Namibian Jeremejevite 0.394ct loose stone
Sale price¥128,000
Australian Boulder Opal 23.164ct Loose
Sale price¥128,000
Cassiterite 1.658ct loose stone (bicolor cassiterite) Japan-Germany exchange
Sale price¥128,000
Colombian pyrite-mica emerald 3.208ct loose stone
Sale price¥228,000
Manganotantalite 0.736ct loose stone from Japan and Germany
Sale price¥158,000
K18PG Brazilian Paraiba Tourmaline 0.286ct Grandidierite Ring GIA
Sale price¥198,000
Pt950 South Sea pearl 9.586ct, alexandrite, kornerupine, diamond ring
Sale price¥198,000
Colombian pyrite emerald 13.691ct loose stone
Sale price¥398,000
Brazilian Green Tourmaline 26.071ct Loose Stone (Sugarloaf Cut)
Sale price¥298,000
Brazilian bicolor tourmaline 6.928ct loose stone (bicolor blue tourmaline)
Sale price¥298,000
Colombian pyrite emerald 8.044ct loose stone
Sale price¥188,000
Green Fluorite 38.074ct Loose
Sale price¥158,000
South African Rhodochrosite 0.990ct Loose Stone by Nikkei
Sale price¥128,000
Zimbabwe Bicolor Euclase 0.152ct Loose Stone by Nikkei
Sale price¥158,000
American Benitoite 4.8mm/0.396ct Loose Stone by Nikkei
Sale price¥298,000
American Bicolor Benitoite 0.358ct Loose Stone by Nikkei
Sale price¥298,000
Brazilian Green Tourmaline 12.252ct Loose Stone
Sale price¥398,000
Colombian pyrite in emerald 6.415ct loose stone
Sale price¥298,000
Colombian oil-free emerald 0.290ct loose stone GIA
Sale price¥198,000
Brazilian Paraiba Tourmaline 0.360ct Loose GIA
Sale price¥298,000
[12552306] Iolite 14.158ct loose stone
Sale price¥258,000
Brazilian Indigolite Tourmaline 7.002ct Loose Stone, Japan-Germany Exchange
Sale price¥198,000
Benitoite 13 stone half eternity ring set (1.8mm)
Sale price¥158,000
Benitoite 0.338ct loose stone
Sale price¥258,000
Unheated color change sapphire 1.070ct loose stone
Sale price¥158,000
Sri Lankan Twin Star Sapphire 2.443ct Loose
Sale price¥128,000
Ukrainian bicolor topaz 5.622ct loose stone
Sale price¥198,000
Benitoite 0.231ct loose
Sale price¥220,000
Benitoite 0.286ct loose
Sale price¥258,000
Benitoite 0.272ct loose stone (emerald cut)
Sale price¥248,000
K18/Pt950 Afghanistan Green Apatite 0.162ct Ring
Sale price¥198,000
Benitoite 0.352ct loose
Sale price¥298,000
Brazilian Paraiba Tourmaline 0.405ct loose stone (CuO2.7% CuO2.2%) GIA
Sale price¥198,000
Royal Blue Sapphire 0.730ct Loose AIGS
Sale price¥158,000
[Dandelion Cut] K18PG Yellow Sapphire 1.927 Ring Japanese-German Edition
Sale price¥298,000
K18 Orange Sapphire 1.980ct Pink Diamond Ring DGL Appraisal
Sale price¥198,000
Colombian Euclase 24.491ct Ruth Medium Treasure Guide
Sale price¥498,000
Unheated Bicolor Paraiba Tourmaline 0.092ct Loose GIA
Sale price¥188,000
South African rhodochrosite 2.477ct loose Japanese-German edition
Sale price¥398,000
Bicolor Paraiba tourmaline 2.477ct loose DGL version
Sale price¥228,000
Pt900 Benitoite (Ice Blue) 0.17ct Pink Diamond Ring
Sale price¥148,000
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.