Cantera opal 17.221ct loose
Sale price¥25,800
Brazilian Alexandrite 0.086ct Ruth (Hemachita Mine)
Sale price¥18,800
Brazilian Alexandrite 0.074ct Ruth (Hemachita Mine)
Sale price¥15,800
Blue spinel 1.949ct loose
Sale price¥29,800
Purple zoisite 3.758ct rough stone from Tanzania
Sale price¥29,800
Brazilian emerald 3.2mm/0.124ct loose
Sale price¥25,800
Colombian Euclase 3.417ct rough stone
Sale price¥12,800
Gacha sapphire 0.268ct loose stone
Sale price¥26,800
Tanzanite 1.593ct loose
Sale price¥15,800
Brazilian dumortierite in quartz 1.573ct loose (faceted cut)
Sale price¥18,800
Brazilian dumortierite in quartz 1.390ct loose (faceted cut)
Sale price¥15,800
Brazilian dumortierite in quartz 1.971ct loose (faceted cut)
Sale price¥19,800
Brazilian dumortierite in quartz 2.625ct loose (faceted cut)
Sale price¥26,800
Brazilian dumortierite in quartz 1.186ct loose (faceted cut)
Sale price¥12,800
Pink tourmaline 6mm/0.990ct loose stone
Sale price¥12,800
Green Tourmaline 6mm/0.991ct Loose
Sale price¥15,800
Goshenite 6mm/0.896ct loose stone
Sale price¥12,800
Goshenite 6mm/0.866ct loose stone
Sale price¥12,800
Brazilian dumortierite in quartz 1.894ct loose
Sale price¥19,800
Brazilian Dumortierite in Quartz 2.932ct loose
Sale price¥25,800
Silky sapphire from Sri Lanka 1.319ct loose
Sale price¥15,800
Silky sapphire from Sri Lanka 0.981ct loose
Sale price¥14,800
Silky sapphire from Sri Lanka 1.036ct loose
Sale price¥12,800
Silky sapphire from Sri Lanka 0.920ct loose
Sale price¥14,800
Silky sapphire from Sri Lanka 1.086ct loose
Sale price¥15,800
Brazilian dumortierite in quartz 1.796ct loose
Sale price¥15,800
Brazilian dumortierite in quartz 3.247ct loose
Sale price¥25,800
Brazilian dumortierite in quartz 1.517ct loose
Sale price¥12,800
Silky sapphire from Sri Lanka 0.868ct loose
Sale price¥12,800
Lazurite in quartz from Madagascar 7.5mm/1.600ct loose
Sale price¥18,800
Mexican egg-in-opal 1.243ct loose stone
Sale price¥14,800
Brazilian Imperial Topaz 0.746ct Loose
Sale price¥18,800
Brazilian Paraiba tourmaline in quartz 0.871ct loose
Sale price¥18,800
Golden Iolite (Cordierite) 0.321ct loose stone
Sale price¥12,800
Additional charge: K18WG (base metal) + 25,000 yen
Sale price¥25,000
Additional charge: K18PG (base metal) + 20,000 yen
Sale price¥20,000
Additional charge for resizing: 16,000 yen
Sale price¥16,000
Benitoite 1.8mm/0.025ct loose stone (colorless benitoite)
Sale price¥15,800
Benitoite 1.8mm/0.025ct loose stone (colorless benitoite)
Sale price¥12,800
Diamond 3.4mm/0.144ct loose stone (I, VS1, Good)
Sale price¥16,800
Tanzanian Kornerupine 0.212ct loose stone
Sale price¥19,800
Tanzanian Golden Sheen Sapphire 3.8mm/0.301ct Loose Stone
Sale price¥13,800
Brazilian Bicolor Tourmaline 7.2mm/1.326ct Loose Stone
Sale price¥19,800
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.