Colombian trapiche emerald (reverse trapiche) 0.134ct rough stone
Sale price¥12,800
[Koshu Precious Stone Cutting] Mexican Fire Opal 1.571ct Loose Patch
Sale price¥69,800
![[Koshu Precious Stones Plusthree] Smoky Quartz 0.657ct Loose Patch](http://store.karatz.jp/cdn/shop/files/P1185356.jpg?v=1752322391&width=4000)
[Koshu Precious Stones Plusthree] Smoky Quartz 0.657ct Loose Patch
Sale price¥19,800
Sapphire from Sri Lanka (Safarin) 0.245ct loose
Sale price¥12,800
Brazilian alexandrite 0.151ct loose
Sale price¥25,800
Brazilian dumortierite in quartz 3.077ct loose
Sale price¥12,800
Australian Iron Opal 20.328ct Loose Stone, Nikko Kan
Sale price¥12,800
Brazilian Madeira Citrine 6.8mm/1.150ct Loose Stone
Sale price¥4,980
Tibetan Andesine 3.300ct Loose Stone
Sale price¥6,980
Mongolian color change andesine 0.665ct loose stone
Sale price¥12,800
Mongolian color change andesine 0.749ct loose stone
Sale price¥12,800
Maushitsit (Mawsissi) from Myanmar 5.796ct loose
Sale price¥6,980
Dominican Republic Conch Pearl 0.388ct Loose
Sale price¥7,980
Dominican Republic Conch Pearl (with flame pattern) 0.731ct loose
Sale price¥8,800
Spanish Andalusite 4mm/0.204ct loose stone (rose cut)
Sale price¥4,980
Mexican cantera opal 27.410ct loose
Sale price¥39,800
Cambodian orange zircon 1.249ct loose stone
Sale price¥9,800
Cambodian orange zircon 1.320ct loose stone
Sale price¥9,800
Brazilian bicolor tourmaline 0.880ct loose stone
Sale price¥12,800
Pt950 American Benitoite 0.14ct / Diamond 0.22ct Ring
Sale price¥98,000
Madagascar Grandidierite 0.156ct loose stone
Sale price¥35,800
Cambodian orange zircon 1.519ct loose stone
Sale price¥9,800
Mexican Cantera Opal 2.661ct Loose
Sale price¥12,800
Unheated blue sapphire from Madagascar 1.310ct loose GIA
Sale price¥89,800
American Benitoite 0.296ct loose stone
Sale price¥148,000
American Benitoite 0.158ct loose stone
Sale price¥59,800
Mexican Cantera Opal 1.394ct Loose Stone (Rose Cut)
Sale price¥12,800
Mexican Cantera Opal 1.209ct Loose Stone (Rose Cut)
Sale price¥12,800
Paraiba tourmaline from Mozambique 1.481ct loose (CuO:0.3%, MnO:4.3%)
Sale price¥158,000
Synthetic rutile 5mm/0.642ct loose stone
Sale price¥12,800
Synthetic rutile 5mm/0.585ct loose
Sale price¥12,800
Tibetan Andesine 4.5mm/0.289ct Loose Stone
Sale price¥2,980
Tibetan Andesine 4.2mm/0.257ct Loose Stone
Sale price¥2,980
Mexican Fire Opal 5mm/0.342ct Loose (Contralus Opal)
Sale price¥9,800
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.