Round Cut
Russian demantoid garnet (horsetail recognized) 0.105ct loose
Sale price¥14,800
Violet Sapphire 3.9mm/0.265ct Loose
Sale price¥8,800
Madagascar Violet Sapphire 4.0mm/0.300ct Loose
Sale price¥8,800
Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.783ct Loose Stone
Sale price¥15,800
Brazilian Paraiba Tourmaline in Quartz 0.712ct Loose Stone
Sale price¥15,800
Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.676ct Loose Stone
Sale price¥15,800
Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.728ct Loose Stone
Sale price¥12,800
Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.718ct Loose Stone
Sale price¥18,800
Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.735ct Loose Stone
Sale price¥15,800
Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.723ct Loose Stone
Sale price¥15,800
Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.751ct Loose Stone
Sale price¥15,800
Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.704ct Loose Stone
Sale price¥15,800
Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.656ct Loose Stone
Sale price¥15,800
Brazilian Golden Beryl 7.3mm/1.391ct Loose Stone
Sale price¥8,800
Tanzanite from Tanzania 4.9mm/0.531ct loose stone
Sale price¥12,800
Tanzanite from Tanzania 4.7mm/0.503ct loose stone
Sale price¥14,800
Russian Demantoid Garnet (Horsetail certified) 3.6mm/0.293ct loose stone
Sale price¥49,800
Tanzania Bicolor Zoisite 7.0mm/1.538ct Loose Stone
Sale price¥29,800
Tanzania Bicolor Zoisite 6.9mm/1.365ct Loose Stone
Sale price¥24,800
Cassiterite 4.0mm/0.566ct loose stone
Sale price¥16,800
Yellow Diamond 4.7mm/0.390ct Loose (LIGHT YELLOW, VVS1, 3Excellent H&C)
Sale price¥49,800
Brazilian Dumortierite in Quartz 1.256ct loose stone
Sale price¥15,800
[Dandelion Cut] Rhodolite Garnet 1.115ct {Collaboration} Loose Stone
Sale price¥29,800
Ethiopian Sunstone 5.1mm/0.468ct Loose
Sale price¥9,800
Brazilian Blue Apatite 5.5mm/0.805ct Loose Stone
Sale price¥9,800
Afghanistan Blue Tourmaline 5.0mm/0.457ct Loose Stone
Sale price¥19,800
Brazilian Green Tourmaline 4.1mm/0.259ct Loose Stone
Sale price¥12,800
Brazilian Green Tourmaline 4.0mm/0.236ct Loose Stone
Sale price¥9,800
Brazilian Green Tourmaline 4.1mm/0.270ct Loose Stone
Sale price¥12,800
Brazilian Swiss Blue Topaz 6.4mm/1.225ct Loose Stone
Sale price¥9,800
Vietnam Aquamarine 4.5mm/0.319ct Loose Stone
Sale price¥7,980
Vietnam Aquamarine 5.6mm/0.577ct Loose Stone
Sale price¥6,980
Spanish Sphalerite 5.5mm/0.804ct loose stone
Sale price¥15,800
Spanish Sphalerite 5.6mm/0.984ct loose stone
Sale price¥19,800
Spanish Sphalerite 0.949ct loose stone
Sale price¥18,800
Brazilian Alexandrite 2.8mm/0.100ct Loose Stone
Sale price¥19,800
Sri Lankan magnetite 6.245ct loose stone by Nikkei
Sale price¥22,800
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 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.