Custom Cut
Brazilian Sky Blue Topaz (untreated) 0.968ct loose stone
Sale price¥12,800
Mozambique Almandine Garnet 1.071ct Loose Stone
Sale price¥9,800
Mozambique Almandine Garnet 2.185ct Loose Stone
Sale price¥15,800
Brazilian Sky Blue Topaz (untreated) 1.470ct loose stone
Sale price¥12,800
Brazilian Blue Topaz 2.912ct Loose
Sale price¥12,800
Bicolor tourmaline 1.833ct loose
Sale price¥18,800
Brazilian dendritic quartz 2.381ct loose stone
Sale price¥7,980
Cambodian colorless zircon 0.676ct loose stone (orange fluorescence)
Sale price¥6,980
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
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
Brazilian Alexandrite 0.519ct loose stone (sugarloaf cut)
Sale price¥358,000
Emerald 0.484ct loose
Sale price¥18,800
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 0.250ct loose stone
Sale price¥7,980
Tanzania Bicolor Zoisite 0.320ct Loose Stone
Sale price¥7,980
Brazilian Green Tourmaline 0.703ct Loose Stone
Sale price¥15,800
Brazilian Green Tourmaline 0.764ct Loose Stone
Sale price¥9,800
Brazilian bicolor tourmaline 0.675ct loose stone
Sale price¥9,800
Mexican Yellow Opal 0.673ct Loose
Sale price¥8,800
Sri Lankan Yellow Sapphire 0.261ct Loose
Sale price¥12,800
Argentine Inca Rose 5.022ct loose stone
Sale price¥12,800
Cambodian colorless zircon 0.508ct loose stone
Sale price¥8,800
Cambodian colorless zircon 0.512ct loose stone
Sale price¥8,800
Cambodian colorless zircon 0.309ct loose stone
Sale price¥4,980
Mexican Cantera Opal 2.982ct Loose
Sale price¥14,800
Mexican Cantera Opal 1.534ct Loose
Sale price¥8,800
Mexican Cantera Opal 11.105ct Loose
Sale price¥12,800
Tanzanian Rhodolite Garnet 10.608ct Loose Stone
Sale price¥98,000
Brazilian Imperial Topaz 0.764ct Loose Stone
Sale price¥19,800
Brazilian bicolor tourmaline 0.845ct loose stone
Sale price¥15,800
Indian Moss Agate 0.755ct Loose Stone
Sale price¥7,980
Indian Moss Agate 1.434ct Loose Stone
Sale price¥12,800
Tourmaline 0.541ct loose stone
Sale price¥8,800
Brazilian Tourmaline 0.858ct Loose Stone
Sale price¥15,800
Brazilian bicolor tourmaline 0.326ct loose stone
Sale price¥8,800
Brazilian Brown Tourmaline 1.529ct Loose Stone
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.