Birthstone list
Tanzanian bicolor tanzanite 1.284ct loose stone
Sale price¥29,800
Ethiopian Opal 7.2mm/0.910ct Loose Stone
Sale price¥6,980
Brazilian Green Tourmaline 4.613ct Loose Stone
Sale price¥39,800
Sri Lankan bicolor sapphire 1.020ct loose stone
Sale price¥59,800
Brazilian Green Tourmaline 1.431ct Loose Stone
Sale price¥12,800
Brazilian Green Tourmaline 0.561ct Loose Stone
Sale price¥25,800
Brazilian bicolor topaz 2.618ct loose stone (untreated)
Sale price¥18,800
Vietnam Aquamarine 0.586ct Loose
Sale price¥12,800
Tanzanite from Tanzania 0.432ct loose stone
Sale price¥12,800
Madagascar Aquamarine 1.678ct Loose Stone
Sale price¥15,800
Mexican Fire Opal 0.448ct Loose
Sale price¥3,980
Brazilian Sky Blue Topaz 1.086ct Loose
Sale price¥8,800
Brazilian Blue Topaz 0.766ct Loose Stone
Sale price¥6,980
Brazilian Blue Topaz 1.355ct Loose
Sale price¥8,800
Brazilian Swiss Blue Topaz 1.043ct Loose Stone
Sale price¥8,800
Brazilian Swiss Blue Topaz 0.724ct Loose Stone
Sale price¥8,800
Brazilian Swiss Blue Topaz 1.042ct Loose Stone
Sale price¥9,800
Brazilian Swiss Blue Topaz 0.890ct Loose
Sale price¥8,800
Brazilian Swiss Blue Topaz 0.889ct Loose Stone
Sale price¥8,800
Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.375ct Loose Stone
Sale price¥18,800
Madagascar Bicolor Sapphire 0.232ct Loose
Sale price¥15,800
Bicolor sapphire 0.301ct loose
Sale price¥18,800
Mexican Fire Opal 1.348ct Loose
Sale price¥15,800
Brazilian Pink Tourmaline 1.045ct Loose Stone
Sale price¥9,800
Brazilian pink tourmaline 0.918ct loose stone
Sale price¥9,800
Brazilian pink tourmaline 0.781ct loose stone
Sale price¥9,800
Brazilian bicolor tourmaline 1.255ct loose stone
Sale price¥25,800
Brazilian bicolor tourmaline 1.875ct loose stone
Sale price¥39,800
Brazilian bicolor tourmaline 1.032ct loose stone
Sale price¥25,800
Brazilian Bicolor Tourmaline 0.901ct Loose Stone (Rose Cut)
Sale price¥12,800
Yellow Diamond (Cabochon Cut) 0.176ct Loose
Sale price¥29,800
Brazilian bicolor tourmaline 13.927ct loose stone
Sale price¥198,000
Mexican Hyalite Opal 6.0mm/0.708ct Loose
Sale price¥25,800
Brazilian Aquamarine 0.176ct Loose Stone
Sale price¥8,800
Mexican Hyalite Opal 0.942ct Loose
Sale price¥9,800
Sri Lankan Yellow Sapphire 0.320ct Loose
Sale price¥15,800
Mexican Fire Opal (Faceted Cut) 0.844ct Loose
Sale price¥15,800
Tanzanite from Tanzania 0.237ct loose stone
Sale price¥8,800
Mexican Cantera Opal 8.331ct Loose
Sale price¥39,800
Colombian emerald 0.202ct loose stone
Sale price¥59,800
Sri Lankan Rhodolite Garnet 0.244ct Loose Stone, Japan-Germany Scale
Sale price¥8,800
Tanzanite from Tanzania 0.350ct loose stone
Sale price¥8,800
Mexican Cantera Opal 1.436ct Loose Stone (Rose Cut)
Sale price¥12,800
Mexican Cantera Opal 1.394ct Loose Stone (Rose Cut)
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.
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.