¥10,000 - ¥30,000

South African yellow diamond (makeable) 0.202ct rough stone Sale price¥15,800

South African gray diamond (makeable) 0.169ct rough stone Sale price¥14,800

Sri Lankan Bicolor Sapphire 0.607ct Loose Stone Sale price¥15,800

Oregon Sunstone from the United States, 5.0mm/0.520ct loose stone Sale price¥15,800

Australian black opal 0.758ct loose stone Sale price¥18,800

3.583ct Australian Black Opal Loose Stone (Double Sided) Sale price¥29,800

Tanzanite from Tanzania 0.680ct loose stone Sale price¥15,800

Paraiba tourmaline from Brazil 3.5mm/0.278ct loose Sale price¥29,800

Rutile (single crystal) from Sri Lanka 10.697ct rough Sale price¥25,800

Paraiba tourmaline from Mozambique 0.270ct loose Sale price¥18,800

Mexican Water Opal 1.790ct Loose (Contralus Opal) Sale price¥29,800

Synthetic rutile 5mm/0.553ct loose stone Sale price¥12,800

Synthetic rutile 5.8mm/0.904ct loose stone Sale price¥12,800

0.604ct rough diamond Sale price¥12,800

Brazilian Blue Tourmaline 0.827ct Loose Stone Sale price¥19,800

Colombian emerald 0.091ct loose stone Sale price¥15,800

Mexican Water Opal (Faceted) 0.215ct Loose (Contrarus Opal) Sale price¥18,800

Colombian Emerald 3.3mm/0.131ct Loose Sale price¥25,800

Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.189ct Loose Stone Sale price¥18,800

Madagascar Bekily Blue Garnet (Color Change Garnet) 0.221ct Loose Stone Sale price¥22,800

German Hauyne 2.7mm/0.076ct Loose Stone Sale price¥29,800

Brazilian Pyrite in Quartz 4.153ct Loose Stone Sale price¥11,000

Brazilian Pyrite in Quartz 6.992ct Loose Stone Sale price¥18,800

American benitoite 0.097ct loose Sale price¥24,800

American benitoite 0.101ct loose Sale price¥25,800

American benitoite 0.102ct loose Sale price¥22,800

American benitoite 0.098ct loose Sale price¥25,800

Bicolor sapphire from Madagascar 0.265ct loose Sale price¥16,800

Goshenite 1.620ct loose Sale price¥15,800

Diaspore 1.209ct loose from Türkiye Sale price¥15,800

Brazilian kyanite in quartz 13.740ct loose Sale price¥29,800

Sphene from Madagascar 1.476ct loose Sale price¥18,800

Bicolor Zoisite 1.210ct loose Sale price¥15,800

Sphene from Madagascar 1.853ct loose Sale price¥24,800

Bicolor chrysoberyl from Madagascar 1.753ct loose Sale price¥25,800

Bicolor chrysoberyl from Madagascar 1.003ct loose Sale price¥14,800

Bicolor chrysoberyl from Madagascar 1.520ct loose Sale price¥18,800

[Mr. Takeshi Yamamoto] Rock crystal 43.123ct loose Sale price¥25,800

Mexican Water Opal (Faceted) 0.402ct Loose (Contrarus Opal) Sale price¥12,800

[12/7 22:00 Sale] Mexican Egg-in Opal 0.381ct Loose Sale price¥18,800

Blue beryl (Mashish beryl) 3.268ct loose stone Sale price¥25,800

[12/7 22:00] Tanzanian Zoisite 1.312ct Loose Stone Sale price¥18,800

[12/7 22:00] Brazilian Rubellite 0.332ct Loose Stone Sale price¥12,800

Sri Lankan Yellow Sapphire 0.343ct Loose Sale price¥12,800

Mali Garnet from Mali (Grossular/Andradite Garnet) 0.741ct Loose Stone with Appraisal Sale price¥25,800

Brazilian Dumortierite in Quartz 1.131ct Loose Stone Sale price¥12,800

Brazilian green tourmaline 0.821ct loose stone Sale price¥12,800

Bicolor Zoisite 0.581ct loose Sale price¥12,800

KARATZ Custom Made

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.

KARATZ・Five Commitments

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.