Diamond 3.7mm/0.197ct Loose (H, VS-1, Good)
Sale price¥29,800
Diamond 3.7mm/0.194ct Loose (H, VS-2, Excellent)
Sale price¥35,800
Diamond 3.7mm/0.190ct Loose (E, VVS-2, VeryGood)
Sale price¥34,800
Diamond 3.5mm/0.145ct Loose (F, VS-1, VeryGood)
Sale price¥26,800
Loose diamond 3.1mm/0.117ct (D, VVS-2, VeryGood)
Sale price¥23,800
Diamond 3.7mm/0.192ct Loose (F, VVS-2, VeryGood)
Sale price¥39,800
Diamond 3.7mm/0.184ct Loose (D, VS-1, VeryGood)
Sale price¥33,800
Diamond 3.3mm/0.172ct Loose (G, VS-1, Flanders Cut)
Sale price¥45,800
Afghan Hackmanite 0.205 ct Loose
Sale price¥36,800
Greenland sapphire 0.592ct loose stone
Sale price¥18,800
American red beryl 0.160ct loose
Sale price¥89,800
Mozambique Aquamarine 0.216ct Loose Stone
Sale price¥6,980
Detroit City Rhodochrosite 4mm/0.434ct Loose Stone
Sale price¥8,800
Unheated Mozambique Ruby 2.7mm/0.135ct Loose
Sale price¥19,800
Sri Lankan Blue Sapphire (Ice Blue) 0.584ct Loose
Sale price¥8,800
Jeremejevite 0.201ct loose stone
Sale price¥29,800
Tanzanian Kornerupine 0.300ct Loose Stone
Sale price¥18,800
Tanzanian Kornerupine 0.249ct loose stone
Sale price¥15,800
Tanzanian Kornerupine 0.201ct loose stone
Sale price¥14,800
Tanzanian Kornerupine 0.200ct Loose Stone
Sale price¥9,800
Colombian oil-free emerald 0.310ct loose stone
Sale price¥298,000
Brazilian Dumortierite in Quartz 0.432ct Loose Stone
Sale price¥6,980
Salt and pepper diamond 0.446ct loose
Sale price¥39,800
Zoisite 0.216ct loose stone (heart shape)
Sale price¥7,980
China Hunan Province Cinnabar 1.056ct Loose Gemstone with Certificate
Sale price¥18,800
GGG (Gadolinium Gallium Garnet) 0.511 ct Loose Stone
Sale price¥12,800
Synthetic Alexandrite 0.414ct Loose
Sale price¥12,800
0.289 ct Loose Spanish Cobalt Calcite with Certificate
Sale price¥29,800
Spanish Cobalt Calcite 0.253ct Loose Stone with Certificate
Sale price¥25,800
Ruby 0.286ct Loose Stone with Certificate
Sale price¥22,800
Loose Brown Diamond 0.290ct (FANCY BROWN, SI-2)
Sale price¥15,800
Diamond 3.7mm/0.318ct Loose (F, SI-1, Princess Cut)
Sale price¥49,800
Colombian emerald 0.499ct rough stone
Sale price¥14,800
Loose diamond 3.5mm/0.167ct (G, VS-1, VeryGood)
Sale price¥29,800
Diamond 3.8mm/0.197ct Loose (E, VVS-1, VeryGood)
Sale price¥39,800
Diamond 3.5mm/0.167ct Loose (D, VVS-2, VeryGood)
Sale price¥37,800
Diamond 3.8mm/0.211ct Loose Stone (E, VS-2, Excellent)
Sale price¥49,800
Diamond 3.8mm/0.216ct Loose (G, VS-1, Excellent)
Sale price¥49,800
Diamond 3.8mm/0.207ct Loose (F, VS-1, Excellent)
Sale price¥35,800
Brazilian Indicolite Tourmaline 0.352ct Loose Stone with Certification
Sale price¥29,800
0.186ct loose Bekily blue garnet (color-change garnet) from Madagascar
Sale price¥18,800
0.213ct Loose Bekily Blue Garnet (Color Change Garnet) from Madagascar
Sale price¥22,800
Oregon Sunstone 0.272ct Loose
Sale price¥6,980
Benitoite 0.231ct loose
Sale price¥220,000
Benitoite 0.286ct loose
Sale price¥258,000
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.