Birthstone list
Parasite Peridot (Parasitetic Peridot) 0.172ct Loose Stone
Sale price¥98,000
Colombian Trapiche Emerald 1.343ct Loose
Sale price¥69,800
[Dandelion Cut] Rhodolite Garnet 1.115ct {Collaboration} Loose Stone
Sale price¥29,800
Tanzanite from Tanzania 0.559ct loose stone
Sale price¥9,800
Tanzanite from Tanzania 0.479ct loose stone
Sale price¥7,980
Tanzanite from Tanzania 0.331ct loose stone
Sale price¥5,980
Tanzanite from Tanzania 0.734ct loose stone
Sale price¥12,800
Tanzanite from Tanzania 0.338ct loose stone
Sale price¥8,800
Brazilian bicolor tourmaline 4.291ct loose stone
Sale price¥55,800
Brazilian bicolor tourmaline 6.227ct loose stone
Sale price¥69,800
Illusion Pink Tourmaline (Iridescent Tourmaline) 5.308ct Loose Stone
Sale price¥69,800
Illusion Pink Tourmaline (Iridescent Tourmaline) 4.172ct Loose
Sale price¥59,800
Illusion Tourmaline (Iridescent Tourmaline) 2.266ct Loose Stone
Sale price¥39,800
Bicolor sapphire 0.244ct loose
Sale price¥15,800
Bicolor sapphire 0.180ct loose
Sale price¥12,800
Bicolor sapphire 0.225ct loose
Sale price¥15,800
Bicolor sapphire 0.080ct loose stone
Sale price¥8,800
Bicolor sapphire 0.480ct loose
Sale price¥28,800
Bicolor sapphire 0.405ct loose
Sale price¥25,800
Bicolor sapphire 0.404ct loose stone
Sale price¥39,800
Afghanistan Seafoam Tourmaline 0.429ct Loose Stone
Sale price¥25,800
Brazilian Green Tourmaline 0.831ct Loose Stone
Sale price¥25,800
Afghanistan Seafoam Tourmaline 0.253ct Loose Stone
Sale price¥15,800
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 London Blue Topaz 0.985ct Loose
Sale price¥8,800
Brazilian London Blue Topaz 0.966ct Loose Stone
Sale price¥8,800
Brazilian Sky Blue Topaz 1.256ct Loose Stone
Sale price¥8,800
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
Silky diamond 2.7mm/0.086ct loose
Sale price¥14,800
Tanzanite 0.513ct loose stone (sugarloaf cut) from Tanzania
Sale price¥9,800
Madagascar pink sapphire 0.486ct loose stone
Sale price¥12,800
Yellow sapphire from Sri Lanka 0.375ct loose
Sale price¥12,800
Madagascar sapphire 0.206ct loose stone
Sale price¥12,800
Madagascar Yellow Sapphire 0.493ct Loose
Sale price¥9,800
Unheated Sri Lankan purple sapphire 0.986ct loose stone
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.
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.