Ice blue sapphire 3.813ct loose
Sale price¥49,800
Chrysoberyl cat's eye 1.080ct loose
Sale price¥8,800
Cantera Opal 46.175ct loose
Sale price¥19,800
Russian demantoid garnet (horsetail recognized) 4.4mm/0.394ct loose
Sale price¥88,800
Mexican fire agate 5.519ct loose
Sale price¥15,800
Tanzanite 1.360ct loose stone
Sale price¥49,800
Russian demantoid garnet (horsetail recognized) 4.6mm/0.423ct loose
Sale price¥98,000
Paraiba tourmaline from Brazil 0.134ct loose (CuO:0.8%, MnO:2.3%)
Sale price¥29,800
Cobalt spinel from Vietnam 2mm/0.031ct loose Japanese-German edition
Sale price¥59,800
Mexican fire agate 3.613ct loose
Sale price¥19,800
Green sapphire 7.545ct loose (spade cut)
Sale price¥69,800
Watermelon tourmaline 44.201ct Ruth Japanese-German book
Sale price¥398,000
Paudlettite 0.375ct loose Japanese-German book
Sale price¥298,000
Bicolor tourmaline 3.277ct loose
Sale price¥9,800
Particolor tourmaline 32.207ct loose (tricolor tourmaline)
Sale price¥398,000
Cantera opal 17.284ct loose
Sale price¥39,800
Cantera Opal 8.678ct loose
Sale price¥35,800
[Mr. Fukasawa Smoky Mushroom] Smoky Quartz 20.250ct loose with patch
Sale price¥35,800
Rose quartz 18.410ct loose (pineapple cut)
Sale price¥9,800
Green quartz 10.330ct loose (pineapple cut)
Sale price¥6,980
Brazilian Blue Topaz 14.890ct Loose
Sale price¥14,800
Fire opal 1.360ct loose
Sale price¥25,800
[Cat cut] Blue green tourmaline 5.5mm loose
Sale price¥12,800
Russian demantoid garnet (horsetail recognized) 5.8mm/0.876ct loose
Sale price¥298,000
Spinel 0.545ct loose (rose cut)
Sale price¥9,800
Spinel 0.705ct loose (rose cut)
Sale price¥9,800
Purple spinel 0.424ct loose (rose cut)
Sale price¥9,800
Pink tourmaline 0.391ct loose
Sale price¥5,980
Pigeon Blood Ruby 0.590ct Loose AIGS
Sale price¥55,800
Russian demantoid garnet (horsetail recognized) 5.3mm/0.633ct loose
Sale price¥248,000
Pink tourmaline 0.158ct loose
Sale price¥8,800
Sealight 2.666ct loose
Sale price¥25,800
Russian demantoid garnet (horsetail recognized) 4.2mm/0.319ct loose
Sale price¥69,800
Mexican Topaz 1.50ct Loose
Sale price¥15,800
Bangkacha sapphire (star sapphire) 69.655ct loose
Sale price¥198,000
[Mr. NOBU] Green Opal from Amazon [Collaboration] 6.8mm loose
Sale price¥9,800
[Cat cut] Amazon green opal 6.5mm/0.580ct loose
Sale price¥9,800
Red beryl 0.181ct loose
Sale price¥35,800
Conch pearl 0.390ct loose (pink white color)
Sale price¥19,800
Zircon 2.219ct loose (with crystals) Japanese-German edition
Sale price¥25,800
Rutilated Quartz (Rutilated Quartz) 82.385ct Loose Stone, Japan-Germany
Sale price¥39,800
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.