Birthstone list
Mexican Fire Opal 0.343ct Loose
Sale price¥15,800
Tanzanian Rhodolite Garnet 1.329ct Loose Stone
Sale price¥15,800
Mozambique Almandine Garnet 6.7mm/1.308ct Loose Stone
Sale price¥12,800
Mozambique Almandine Garnet 1.065ct Loose Stone
Sale price¥11,000
Mozambique Almandine Garnet 1.465ct Loose Stone
Sale price¥15,800
Mozambique Almandine Garnet 1.229ct Loose Stone
Sale price¥12,800
Mozambique Almandine Garnet 0.913ct Loose Stone
Sale price¥9,800
Zambian emerald 0.099ct loose stone
Sale price¥9,800
Sri Lankan sapphire 0.211ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 0.862ct loose stone
Sale price¥7,980
Pink tourmaline 0.333ct loose stone
Sale price¥9,800
Madagascar sapphire 0.375ct loose stone
Sale price¥8,800
Mexican Cantera Opal 5.261ct Loose
Sale price¥49,800
Mexican Cantera Opal 7.275ct Loose
Sale price¥35,800
Mexican Cantera Opal 5.238ct Loose
Sale price¥15,800
Mexican Cantera Opal 9.909ct Loose
Sale price¥39,800
Mexican Cantera Opal 1.842ct Loose
Sale price¥39,800
Mexican Cantera Opal 4.602ct Loose
Sale price¥29,800
Mexican Cantera Opal 5.126ct Loose
Sale price¥25,800
Zambian emerald 0.181ct loose stone
Sale price¥8,800
Diamond (cabochon cut) 0.247ct loose (VS-SI class equivalent)
Sale price¥39,800
Sri Lankan Star Sapphire 0.796ct Loose
Sale price¥9,800
Sri Lankan Star Sapphire 5.0mm/0.897ct Loose Stone
Sale price¥8,800
Sri Lankan Star Sapphire 0.681ct Loose
Sale price¥8,800
Sri Lankan Star Sapphire 0.753ct Loose
Sale price¥8,800
Afghanistan Bicolor Tourmaline 0.471ct Loose Stone
Sale price¥9,800
Bekiri Blue Garnet (Color Change Garnet) from Madagascar 0.170ct Loose
Sale price¥17,800
Nepalese Kyanite 0.793ct loose stone
Sale price¥6,980
Russian Demantoid Garnet 2.5mm/0.111ct Loose Stone
Sale price¥18,800
Brazilian Swiss Blue Topaz 10.958ct Loose
Sale price¥14,800
Brazilian Swiss Blue Topaz 11.536ct Loose
Sale price¥14,800
Brazilian Swiss Blue Topaz 17.410ct Loose
Sale price¥27,800
Russian Demantoid Garnet (Horsetail Recognized) 5.2mm/0.661ct Loose Stone
Sale price¥198,000
Sri Lankan White Sapphire 4.0mm/0.242ct Loose Stone
Sale price¥12,800
YAG (Yttrium Aluminum Garnet) 2.861ct loose stone
Sale price¥25,800
Tanzanite from Tanzania 0.269ct loose stone
Sale price¥9,800
Madagascar pink sapphire 0.284ct loose stone
Sale price¥12,800
Madagascar White Sapphire 0.485ct Loose
Sale price¥19,800
Brazilian Paraiba Tourmaline in Quartz 0.295ct Loose Stone
Sale price¥14,800
Madagascar Purple Sapphire 0.311ct Loose Stone
Sale price¥9,800
Tanzanian bicolor sapphire 0.623ct loose stone
Sale price¥16,800
Tanzanian bicolor sapphire 0.571ct loose stone
Sale price¥15,800
Tanzanian bicolor sapphire 0.598ct loose stone
Sale price¥16,800
Tanzanian bicolor sapphire 0.707ct loose stone
Sale price¥18,800
Tanzanian bicolor sapphire 0.950ct loose stone
Sale price¥25,800
Hollandite in Amethyst 3.048ct loose stone
Sale price¥9,800
Tanzanite from Tanzania 1.053ct loose stone
Sale price¥25,800
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.