Round Cut
Colombian emerald 3.7mm/0.207ct loose stone
Sale price¥22,800
Brazilian Alexandrite 2.9mm/0.123ct loose stone
Sale price¥29,800
Brazilian Paraiba Tourmaline in Quartz 0.295ct Loose Stone
Sale price¥14,800
Madagascar Blue Sapphire 4.0mm/0.326ct Loose
Sale price¥11,000
YAG (Yttrium Aluminum Garnet) 2.861ct loose stone
Sale price¥25,800
Sri Lankan White Sapphire 4.0mm/0.242ct Loose Stone
Sale price¥12,800
Russian Demantoid Garnet (Horsetail Recognized) 5.2mm/0.661ct Loose Stone
Sale price¥198,000
Russian Demantoid Garnet 2.5mm/0.111ct Loose Stone
Sale price¥18,800
Bekiri Blue Garnet (Color Change Garnet) from Madagascar 0.170ct Loose
Sale price¥17,800
Bekiri Blue Garnet (Color Change Garnet) from Madagascar 0.160ct Loose
Sale price¥16,800
Tanzanite from Tanzania 7.0mm/1.427ct loose stone
Sale price¥55,800
Sri Lankan Blue Sapphire 4.0mm/0.329ct Loose Stone
Sale price¥22,800
Kenyan Tsavorite 3.9mm/0.257ct Loose Stone
Sale price¥8,800
Ruby 4.0mm/0.305ct loose stone
Sale price¥45,800
Brazilian Alexandrite 0.135ct Loose Stone JTL Catalog
Sale price¥35,800
Brazilian Alexandrite 2.7mm/0.090ct Loose Stone JTL Catalog
Sale price¥22,800
Brazilian Alexandrite 0.072ct Loose Stone JTL Catalog
Sale price¥12,800
Namibian Jeremejevite 2.3mm/0.063ct loose stone
Sale price¥12,800
Grandidierite from Madagascar 2.7mm/0.102ct loose stone
Sale price¥25,800
Synthetic Moissanite 5.0mm/0.370ct Loose Stone (Rose Cut)
Sale price¥7,980
Australian Prehnite 5.4mm/0.475ct loose stone
Sale price¥6,980
Zambian Emerald 3.7mm/0.215ct Loose Stone (Silky Emerald)
Sale price¥9,800
Indian Moss Agate 0.776ct Loose Stone
Sale price¥6,980
Indian Moss Agate 6.3mm/0.620ct Loose Stone
Sale price¥6,980
Mozambique Almandine Garnet 1.614ct Loose Stone
Sale price¥14,800
Mozambique Almandine Garnet 6.7mm/1.308ct Loose Stone
Sale price¥12,800
Indian Parrot Chrysoberyl 3.2mm/0.190ct Loose Stone
Sale price¥15,800
Sri Lankan pink sapphire 4.1mm/0.326ct loose stone
Sale price¥12,800
Sri Lankan White Sapphire 4.0mm/0.275ct Loose
Sale price¥12,800
Sri Lankan pink sapphire 4.0mm/0.296ct loose stone
Sale price¥12,800
Sri Lankan Blue Sapphire 4.0mm/0.414ct Loose Stone
Sale price¥15,800
Zambian Canary Yellow Tourmaline 4.0mm/0.277ct Loose Stone
Sale price¥12,800
Mexican Fire Opal 4.8mm/0.336ct Loose
Sale price¥5,980
Mexican Opal 4.9mm/0.327ct Loose
Sale price¥9,800
Mexican Opal 3.8mm/0.157ct Loose
Sale price¥6,980
Tanzanite from Tanzania 5.0mm/0.481ct loose stone
Sale price¥12,800
Brazilian Lepidocrocite in Quartz 8.5mm/2.245ct Loose Stone
Sale price¥8,800
Brazilian Lepidocrocite in Quartz 5.0mm/0.477ct Loose Stone
Sale price¥4,980
[Sakura Incut] Brazilian Blue Topaz 16mm/15.329ct Loose Patch
Sale price¥39,800
Zimbabwe Bicolor Euclase 2.6mm/0.087ct Loose Stone
Sale price¥55,800
Zimbabwean Euclase 1.8mm/0.021ct Loose Stone
Sale price¥15,800
Brazilian copper rutilated quartz 6.8mm/1.206ct loose stone
Sale price¥8,800
YAG (Yttrium Aluminum Garnet) 4.5mm/0.440ct loose stone
Sale price¥8,800
YAG (Yttrium Aluminum Garnet) 4.8mm/0.538ct loose stone
Sale price¥8,800
YAG (Yttrium Aluminum Garnet) 4.1mm/0.322ct loose stone
Sale price¥8,800
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.