Birthstone list
Myanmar Trapiche Sapphire 0.206ct Loose
Sale price¥18,800
American Herkimer Diamond (Rock Crystal) 5.5mm/0.528ct Loose
Sale price¥8,800
Tanzanite 0.760ct loose stone (sugarloaf cut)
Sale price¥9,800
Bolivian Ametrine 36.887ct loose stone
Sale price¥98,000
Bolivian Ametrine 31.854ct loose stone
Sale price¥49,800
Bolivian Ametrine 16.867ct loose stone
Sale price¥39,800
Mexican Cantera Opal 13.531ct Loose
Sale price¥69,800
Mexican Cantera Opal 10.986ct Loose
Sale price¥29,800
Mexican Cantera Opal 7.262ct Loose
Sale price¥19,800
Mexican Cantera Opal 6.710ct Loose
Sale price¥22,800
Mexican Cantera Opal 6.205ct Loose
Sale price¥9,800
Mexican Cantera Opal 5.887ct Loose
Sale price¥12,800
YAG (Yttrium Aluminum Garnet) 3.9mm/0.317ct loose stone
Sale price¥6,980
YAG (Yttrium Aluminum Garnet) 4.9mm/0.574ct loose stone
Sale price¥8,800
YAG (Yttrium Aluminum Garnet) 5.0mm/0.672ct loose stone
Sale price¥9,800
Synthetic Opal 1.804ct Loose
Sale price¥14,800
YAG (Yttrium Aluminum Garnet) 4.1mm/0.346ct Loose Stone (Rose Cut)
Sale price¥8,800
YAG (Yttrium Aluminum Garnet) 3.3mm/0.208ct Loose Stone (Rose Cut)
Sale price¥5,980
Mexican Fire Opal 0.718ct Loose
Sale price¥9,800
Mexican Fire Opal 0.593ct Loose (Faceted Cut)
Sale price¥9,800
Almandine Garnet 0.660ct Loose
Sale price¥6,980
Brazilian Amethyst 9.749ct Loose Stone
Sale price¥15,800
Brazilian Amethyst 12.9mm/7.637ct Loose Stone
Sale price¥12,800
Indian Moonstone 8mm/1.879ct Loose
Sale price¥6,980
Emerald 0.310ct loose
Sale price¥12,800
Amethyst 9.860ct loose stone
Sale price¥18,800
Nigerian bicolor tourmaline 0.379ct loose stone
Sale price¥8,800
Canary Yellow Tourmaline from Mozambique 0.142ct loose stone
Sale price¥8,800
Canary Yellow Tourmaline from Mozambique 0.170ct loose stone
Sale price¥8,800
Brazilian Imperial Topaz 0.744ct Loose Stone
Sale price¥12,800
Tanzanite from Tanzania 0.272ct loose stone
Sale price¥8,800
Tanzanian green sapphire 0.303ct loose stone
Sale price¥9,800
Sri Lankan Yellow Sapphire 0.267ct Loose
Sale price¥14,800
Colombian mint color emerald 0.297ct loose stone
Sale price¥9,800
[12550851] 2.944ct Mozambique pink tourmaline loose stone
Sale price¥49,800
[12550838] Brazilian Limonite in Topaz 4.680ct Loose Stone
Sale price¥11,800
[12551529] Australian black opal 2.233ct loose stone
Sale price¥69,800
[12551148] Australian black opal 3.890ct loose stone
Sale price¥69,800
[12550887] Paraiba Tourmaline from Mozambique 0.784ct loose stone
Sale price¥128,000
Paraiba Tourmaline from Mozambique 0.360ct loose stone
Sale price¥18,800
Brazilian Limonite in Topaz 4.743ct loose stone
Sale price¥12,800
Colombian Trapiche Emerald 0.488ct Loose
Sale price¥25,800
Russian rough diamond (sawable) 0.117ct loose
Sale price¥29,800
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.