Custom Cut
Cambodian colorless zircon 1.149ct loose stone (orange fluorescence)
Sale price¥12,800
Cambodian colorless zircon 1.218ct loose stone (orange fluorescence)
Sale price¥12,800
Brazilian Petalite 0.615ct loose stone
Sale price¥6,980
Brazilian Dalmatian Quartz 2.041ct Loose Stone
Sale price¥12,800
Spodumene 1.844ct loose stone
Sale price¥12,800
Blue beryl (Macis beryl) 0.162ct loose stone
Sale price¥8,800
Sri Lankan Yellow Sapphire 0.221ct Loose
Sale price¥9,800
Indian Moonstone 1.105ct Loose
Sale price¥8,800
Mexican Opal (Faceted Cut) 0.550ct Loose
Sale price¥25,800
Synthetic Moissanite 10mm/4.147ct Loose Stone
Sale price¥16,800
Blue sapphire 0.217ct loose stone
Sale price¥15,800
Brazilian bicolor tourmaline 1.953ct loose stone
Sale price¥18,800
[Sakura Shape] Mexican Opal 2.551ct Loose Patch
Sale price¥59,800
[Takeshi Yamamoto] Bicolor fluorite 15.624ct loose stone
Sale price¥45,800
[Takeshi Yamamoto] Rose quartz 25.017ct loose stone
Sale price¥59,800
[Takeshi Yamamoto] Ametrine 20.856ct loose stone
Sale price¥98,000
[Takeshi Yamamoto] Rock crystal 78.580ct loose stone
Sale price¥98,000
Synthetic Opal (Synthetic Black Opal) 0.651ct Loose
Sale price¥15,800
Sri Lankan Yellow Sapphire 0.226ct Loose
Sale price¥8,800
Blue Beryl (Macisi Beryl) 3.5mm/0.158ct loose stone
Sale price¥8,800
Indian Moonstone 8.2mm/1.823ct Loose
Sale price¥14,800
Australian Prehnite 5.398ct loose stone
Sale price¥12,800
Tanzanian Blue Spinel 1.028ct Loose Stone
Sale price¥39,800
Brazilian Alexandrite 0.519ct loose stone (sugarloaf cut)
Sale price¥358,000
Emerald 0.484ct loose
Sale price¥18,800
Emerald 0.156ct loose stone
Sale price¥8,800
Color shift amethyst 4.191ct loose stone
Sale price¥14,800
Tanzanite from Tanzania 0.351ct loose stone
Sale price¥9,800
Tanzania Green Zoisite 0.335ct Loose Stone
Sale price¥12,800
Tanzanite from Tanzania 0.298ct loose stone
Sale price¥9,800
Tanzanite from Tanzania 0.250ct loose stone
Sale price¥7,980
Tanzania Bicolor Zoisite 0.320ct Loose Stone
Sale price¥7,980
Ruby 0.273ct loose stone
Sale price¥13,800
Ruby 0.173ct loose stone
Sale price¥12,800
Brazilian Green Tourmaline 0.703ct Loose Stone
Sale price¥15,800
Brazilian Green Tourmaline 0.764ct Loose Stone
Sale price¥9,800
Sri Lankan Yellow Sapphire 0.344ct Loose
Sale price¥8,800
Sri Lankan Yellow Sapphire 0.300ct Loose
Sale price¥8,800
Ruby 0.248ct loose
Sale price¥12,800
Brazilian bicolor tourmaline 0.675ct loose stone
Sale price¥9,800
Brazilian Pink Tourmaline 0.448ct Loose Stone
Sale price¥8,800
Mexican Yellow Opal 0.673ct Loose
Sale price¥8,800
Sri Lankan Yellow Sapphire 0.593ct Loose
Sale price¥15,800
Sri Lankan Yellow Sapphire 0.299ct Loose
Sale price¥12,800
Sri Lankan Yellow Sapphire 0.261ct Loose
Sale price¥12,800
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.