Colombian emerald 0.443ct rough stone
Sale price¥9,800
Mica in Quartz 0.865ct Loose Stone
Sale price¥6,980
Mica in Quartz 0.736ct loose stone
Sale price¥6,980
Mica in Quartz 0.710ct Loose
Sale price¥5,980
Mica in Quartz 0.594ct loose stone
Sale price¥5,980
Oregon Sunstone 0.272ct Loose
Sale price¥8,800
Padparadscha Sapphire 0.497ct Loose DGL
Sale price¥59,800
Tanzanian Kornerupine 0.298ct loose stone
Sale price¥35,800
Sinhalite from Sri Lanka 0.706ct loose stone
Sale price¥9,800
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 color change sapphire 1.070ct loose stone
Sale price¥158,000
Unheated Brazilian Paraiba Tourmaline 0.110ct Loose Stone AIGS
Sale price¥258,000
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
Colombian emerald 0.145ct loose stone with precious stone
Sale price¥39,800
Colombian emerald 0.167ct loose stone with jewel
Sale price¥49,800
Colombian emerald 0.111ct loose stone with precious stone
Sale price¥29,800
Oregon Sunstone 0.575ct loose
Sale price¥12,800
Oregon sunstone 0.390ct loose
Sale price¥14,800
Pink diaspore 0.351ct loose stone
Sale price¥9,800
Ruby 0.242ct loose stone
Sale price¥14,800
Ruby 0.110ct loose
Sale price¥9,800
Aquamarine 0.327ct loose stone
Sale price¥9,800
Lavender quartz (scorolite) 1.130ct loose stone
Sale price¥6,980
Sunstone (Illusion Sunstone) 0.553ct Loose
Sale price¥8,800
South African Sugilite 7.3mm/1.034ct loose stone
Sale price¥18,800
South African Sugilite 0.814ct loose stone
Sale price¥14,800
Namibian Jeremejevite 0.261ct loose stone
Sale price¥69,800
Jeremejevite 0.201ct loose stone
Sale price¥45,800
Tanzanian Kornerupine 0.300ct Loose Stone
Sale price¥29,800
Tanzanian Kornerupine 0.210ct loose stone
Sale price¥18,800
Tanzanian Kornerupine 0.220ct loose stone
Sale price¥15,800
Tanzanian Kornerupine 0.229ct loose stone
Sale price¥25,800
Tanzanian Kornerupine 0.249ct loose stone
Sale price¥22,800
Tanzanian Kornerupine 0.303ct loose stone
Sale price¥12,800
Tanzanian Kornerupine 0.201ct loose stone
Sale price¥25,800
Tanzanian Kornerupine 0.200ct Loose Stone
Sale price¥18,800
Sri Lankan Purple Spinel 1.638ct Loose Stone, Japan-Germany Exchange
Sale price¥69,800
Rhodochrosite from Detroit City, USA 3.1mm/0.154ct loose stone
Sale price¥29,800
Rhodochrosite from Detroit City, USA 3.2mm/0.150ct loose stone
Sale price¥29,800
Paraiba tourmaline from Mozambique 0.252ct loose
Sale price¥15,800
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.
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.