Australian Iron Opal 17.450ct Loose
Sale price¥12,800
Tanzanian Violet Spinel 0.541ct Loose Stone
Sale price¥9,800
Tanzanian Kornerupine 0.616ct loose stone
Sale price¥49,800
Tanzanian Kornerupine 0.500ct Loose Stone
Sale price¥39,800
Sri Lankan Yellow Sapphire 0.349ct Loose
Sale price¥15,800
Myanmar Musgravite 0.214ct Loose Stone Nikko Kan
Sale price¥258,000
Mexican Danburite 6.780ct loose stone (light pink)
Sale price¥25,800
Myanmar Musgravite/Spinel 8.005ct Loose Stone Japan-Germany
Sale price¥98,000
Brazilian cat's eye emerald 4.070ct loose stone
Sale price¥198,000
Ethiopian Opal 1.014ct Loose
Sale price¥3,980
Ethiopian Opal 1.521ct Loose
Sale price¥3,980
Congo hemimorphite 9.849ct loose stone
Sale price¥49,800
Madagascar Bicolor Sapphire 0.626ct Loose
Sale price¥29,800
Colombian emerald 10.940ct rough stone
Sale price¥69,800
Brazilian Tinkerbell Quartz (Pink Fire Quartz) 6.020ct Loose Stone
Sale price¥9,800
Zimbabwe bicolor euclase rough stone 0.960ct
Sale price¥39,800
Brazilian Dendritic Agate 1.481ct Loose Stone
Sale price¥12,800
Kunzite from Afghanistan 1.857ct loose stone
Sale price¥18,800
Sri Lankan Star Sapphire 7.976ct Loose
Sale price¥98,000
American Axinite 1.630ct loose stone
Sale price¥7,980
American Axinite 2.10ct loose stone
Sale price¥9,800
Paraiba tourmaline from Brazil 0.217ct loose (CuO:1.5%, MnO:0.5%)
Sale price¥39,800
Nigerian Cobalt Garnite 0.216ct Loose Stone, Japan-Germany Exchange
Sale price¥45,800
Amazon Green Opal 7mm/0.88ct Loose
Sale price¥7,980
Brazilian pyrite in quartz 57.230ct loose stone
Sale price¥25,800
Spanish Sphalerite 11mm/7.286ct loose stone
Sale price¥98,000
Dominican Republic Conch Pearl 1.990ct Loose (with flame pattern)
Sale price¥29,800
Zimbabwe bicolor euclase 0.205ct loose stone
Sale price¥98,000
[Takeshi Yamamoto] Bicolor Smoky Quartz 10.674ct Loose Stone
Sale price¥39,800
Colombian pyrite-bearing euclase 37.340ct rough stone by Takakikyo
Sale price¥12,800
Colombian pyrite-bearing euclase 23.430ct rough stone by Takakikyo
Sale price¥19,800
Dominican Republic Conch Pearl 0.818ct Loose
Sale price¥8,800
Sri Lankan bicolor sapphire 0.484ct loose stone
Sale price¥12,800
Moldavite from former Czechoslovakia 0.077ct loose stone
Sale price¥6,980
Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.794ct Loose Stone
Sale price¥15,800
Brazilian Green Spodumene 0.599ct Loose Stone
Sale price¥4,980
Madagascar Purple Sapphire 0.342ct Loose Stone
Sale price¥12,800
Sri Lankan Zircon 5.8mm/1.255ct Loose Stone
Sale price¥9,800
Synthetic black opal 2.996ct loose stone
Sale price¥29,800
Sri Lankan Blue Sapphire 0.251ct Loose
Sale price¥12,800
Sri Lankan Yellow Sapphire 0.365ct Loose
Sale price¥15,800
Kunzite from Afghanistan 7.741ct loose stone
Sale price¥15,800
Montana Sapphire 4mm/0.330ct Loose (Yellow Sapphire)
Sale price¥7,980
Labradorite (Spectrolite) from Finland 56.702ct loose
Sale price¥14,800
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.