American Herkimer Diamond (Rock Crystal) 5.5mm/0.528ct Loose
Sale price¥8,800
Goshenite 5.7mm/0.572ct loose stone
Sale price¥5,980
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 rutile 0.942ct loose stone
Sale price¥14,800
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
[12549597 published] Goshenite 0.439ct loose
Sale price¥5,980
[12550838] Brazilian Limonite in Topaz 4.680ct Loose Stone
Sale price¥11,800
[12552038] Beryl Cat's Eye 32.703ct Loose Stone
Sale price¥98,000
Mica in Quartz 0.758ct Loose Stone
Sale price¥6,980
Brazilian Limonite in Topaz 4.743ct loose stone
Sale price¥12,800
Russian rough diamond (sawable) 0.117ct loose
Sale price¥29,800
Russian rough diamond (sawable) 0.101ct loose
Sale price¥25,800
Pakistani Oil in Quartz 0.438ct Loose Stone
Sale price¥9,800
South African diamond rough (sawable) 0.110ct rough
Sale price¥25,800
South African diamond rough (sawable) 0.091ct rough
Sale price¥22,800
South African diamond rough (sawable) 0.085ct rough
Sale price¥19,800
Ethiopian Opal 0.629ct Loose (Sphere)
Sale price¥7,980
Brazilian dendritic quartz 4.587ct loose stone
Sale price¥12,800
Goshenite 0.846ct loose stone
Sale price¥8,800
Mexican Hyalite Opal 1.215ct Loose (Faceted Cut)
Sale price¥9,800
Brazilian Quartz in Quartz 15.373ct Loose Stone
Sale price¥24,800
Romanesite in Quartz 4.825ct loose stone
Sale price¥12,800
Mica in Quartz 0.865ct Loose Stone
Sale price¥6,980
Mica in Quartz 0.736ct loose stone
Sale price¥6,980
Mica in Quartz 0.710ct Loose
Sale price¥5,980
Mica in Quartz 0.594ct loose stone
Sale price¥5,980
Spodumene 9.001ct loose stone
Sale price¥29,800
Spodumene 9.730ct loose stone
Sale price¥29,800
White Conch Pearl (with flame pattern) 0.627ct loose stone with jewel
Sale price¥69,800
Diamond 0.042ct loose (VS class equivalent, emerald cut)
Sale price¥8,800
Diamond 3.4mm/0.144ct loose stone (I, VS1, Good)
Sale price¥16,800
Brazilian Romanesite in Quartz 2.914ct loose stone
Sale price¥9,800
Benitoite 1.8mm/0.025ct loose stone (colorless benitoite)
Sale price¥12,800
Benitoite 1.8mm/0.025ct loose stone (colorless benitoite)
Sale price¥15,800
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.