Japanese style twin crystal 4.727ct raw stone
Sale price¥15,800
Japanese style twin crystal 5.771ct raw stone
Sale price¥19,800
Mexican Fire Opal 1.222ct Loose (Faceted Cut)
Sale price¥12,800
Colombian emerald 0.215ct loose stone
Sale price¥25,800
Colombian emerald 0.231ct loose stone
Sale price¥28,800
Colombian emerald 0.258ct loose stone
Sale price¥29,800
Colombian emerald 0.191ct loose
Sale price¥22,800
Japanese style twin crystal 4.715ct raw stone
Sale price¥15,800
Pakistani Veirinite 0.107ct loose stone
Sale price¥29,800
Madagascar sphene 0.665ct loose stone
Sale price¥12,800
Tanzanian Kornerupine 0.233ct loose stone
Sale price¥14,800
Tanzanian Kornerupine 0.202ct loose stone
Sale price¥18,800
Paraiba tourmaline from Brazil 0.048ct loose
Sale price¥29,800
Paraiba tourmaline from Brazil 0.051ct loose
Sale price¥29,800
Paraiba tourmaline from Brazil 0.052ct loose
Sale price¥29,800
Paraiba tourmaline from Brazil 0.047ct loose
Sale price¥29,800
Colombian emerald rough stone 1.707ct
Sale price¥18,800
Spanish Andalusite 0.776ct loose stone
Sale price¥11,800
Oregon Sunstone from the United States 0.941ct loose stone
Sale price¥29,800
Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.365ct Loose Stone
Sale price¥18,800
Tanzanite from Tanzania 0.567ct loose stone
Sale price¥14,800
Tanzanite from Tanzania 0.767ct loose stone
Sale price¥29,800
Tanzanite from Tanzania 6.5mm/0.945ct loose stone
Sale price¥28,800
Oregon Sunstone from the United States 6mm/0.849ct loose stone
Sale price¥22,800
Oregon Sunstone from the United States 6.0mm/0.844ct loose stone
Sale price¥25,800
Chameleon Diamond 0.057ct Loose (FANCY LIGHT GRAY GREEN, SI2)
Sale price¥29,800
[Koshu Precious Stone Cutting Pluethree] Yellow Beryl 0.880ct Loose
Sale price¥29,800
[Koshu Precious Stones plusthree] Amethyst 4.306ct Loose Stone Patch
Sale price¥25,800
Tanzanite 0.482ct loose stone (princess cut) from Tanzania
Sale price¥18,800
Sri Lankan Goethite Topaz 4.992ct Loose Stone
Sale price¥14,800
Brazilian bicolor euclase 0.572ct loose stone
Sale price¥24,800
Brazilian bicolor euclase 0.291ct loose stone
Sale price¥15,800
Brazilian bicolor euclase 0.157ct loose stone
Sale price¥14,800
Brazilian bicolor euclase 0.168ct loose stone
Sale price¥25,800
Brazilian Pompon Quartz (Radiated Crystal in Quartz) 7.686ct Loose
Sale price¥15,800
Brazilian bicolor euclase 0.233ct loose stone
Sale price¥24,800
Brazilian bicolor euclase 0.212ct loose stone
Sale price¥15,800
Brazilian bicolor euclase 0.239ct loose stone
Sale price¥18,800
Brazilian alexandrite 0.081ct loose
Sale price¥16,800
Mozambique rubellite 1.141ct loose stone
Sale price¥29,800
Mexican Fire Opal 7.1mm/0.911ct Loose
Sale price¥25,800
Mexican Fire Opal 6.7mm/0.953ct Loose
Sale price¥25,800
Brazilian Euclase 0.117ct Loose Stone
Sale price¥12,800
Colombian pyrite-mica emerald 0.649ct loose stone
Sale price¥29,800
Brazilian Limonite in Topaz 6.829ct loose stone
Sale price¥17,800
Brazilian Lazurite (Azurite) 0.052ct loose stone
Sale price¥16,800
Brazilian Lazurite (Azurite) 0.061ct loose stone
Sale price¥18,800
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.