Oval Cut

coming soon

【12/30 22時販売】ブラジル産パライバトルマリン 0.128ctルース（CuO:1.7%,MnO:3.4%） Sale price¥29,800

[12/6 22:00] Indonesian Parasitic Peridot 0.260ct Loose Stone Sale price¥98,000

[Shinjuku Marui Annex 202511] [12/6 22:00] Mozambique Ruby 0.176ct Loose Sale price¥18,800

[12/14 22:00 Sale] Madagascar Iolite 0.644ct Loose Stone Sale price¥7,980

[12/9 22:00] Brazilian Lavender Quartz (Scorolite) 0.994ct Loose Stone Sale price¥8,800

[12/9 22:00 Sale] Sinhalite from Sri Lanka 0.658ct Loose Stone Sale price¥9,800

[12/10 22:00] Mali Garnet (Grossular/Andradite Garnet) 1.008ct Loose Stone from the Republic of Mali with Certificate of Authenticity Sale price¥35,800

[12/12 22:00 Sale] Mali Garnet (Grossular/Andradite Garnet) 0.811ct Loose Stone from the Republic of Mali with Certificate of Authenticity Sale price¥29,800

[12/22 22:00] Mozambique Ruby 0.537ct Loose Sale price¥15,800

[12/21 22:00] Zambian Bicolor Tourmaline 6.536ct Loose Stone Sale price¥128,000

[12561445] Spinel 0.310ct Loose Stone Sale price¥6,980

[Available at 10 PM on December 20th] Mali Garnet (Grossular/Andradite Garnet) 0.872ct Loose Stone from the Republic of Mali with Certificate of Authenticity Sale price¥29,800

[12/21 22:00] Myanmar Leuco Garnet 0.542ct Loose Stone with Certificate of Authenticity Sale price¥39,800

[On Sale 11/30 at 10pm] Brazilian Indigolite Tourmaline 0.431ct Loose Stone with Certificate of Authenticity Sale price¥29,800

[On Sale 11/23 10pm] 4.678ct Oregon Sunstone Loose Stone from the USA Sale price¥69,800

[On Sale 11/29 10pm] Greenland Ruby 0.253ct Loose Stone with Certificate Sale price¥49,800

[On Sale 11/26 10pm] Tanzanian Bicolor Sapphire 0.380ct Loose (Teal) Sale price¥18,800

[11/26 22:00 Sale] Sri Lankan Pink Zircon 1.991ct Loose Sale price¥29,800

[11/27 22:00 Sale] Indian Iolite Sunstone 0.540ct Loose Sale price¥8,800

[On Sale at 10 PM on November 20th] Brazilian Yellow Beryl 9.747ct Loose Stone Sale price¥98,000

[11/18 22:00] Oregon Sunstone from the United States, 2.594ct Loose Sale price¥39,800

[11/17 22:00 Sale] Oregon Sunstone from the United States, 0.530ct Loose Sale price¥15,800

[On Sale 11/16 10pm] Madagascar Dumortierite (Single Crystal) 0.195ct Loose Stone Sale price¥89,800

[11/14 22:00 Sale] Afghanistan Kunzite 3.973ct Loose Stone Sale price¥12,800

[On Sale 11/9 at 10pm] Brazilian Indigolite Tourmaline 0.210ct Loose Stone with Certificate of Authenticity Sale price¥9,800

[11/20 22:00 Sale] Tanzanian Almandine Garnet 2.972ct Loose Stone Sale price¥18,800

[On Sale 11/8 at 10pm] Russian Demantoid Garnet 0.192ct Loose Stone Sale price¥79,800

[On Sale 11/3 at 10pm] Mozambique Rubellite 0.814ct Loose Stone Sale price¥39,800

[11/2 22:00 Sale] Sri Lankan Blue Sapphire 0.187ct Loose Sale price¥29,800

[11/2 22:00] Brazilian Pink Tourmaline 2.765ct Loose Stone Sale price¥69,800

[11/1 22:00 Sale] Sri Lankan saffron 0.738ct loose stone Sale price¥98,000

[On Sale 11/1 at 10pm] Tanzanian Kornerupine 0.324ct Loose Stone Sale price¥29,800

[On Sale 11/3 at 10 PM] Tanzanian Yellow Zoisite 0.684ct Loose Stone with Certificate of Authenticity Sale price¥19,800

[Shinjuku Marui Annex 202511] Unheated Pigeon Blood Ruby from Myanmar, 0.640ct, Loose, AIGS Sale price¥258,000

[On Sale 11/6 at 10pm] Colombian Bicolor Fluorite 3.209ct Loose Stone Sale price¥18,800

[11/14 22:00 Sale] Madagascar Pezzottaite 0.198ct Loose Stone Sale price¥15,800

[On Sale at 10 PM on October 31st] Tanzanian Bicolor Sapphire 0.486ct Loose Sale price¥12,800

Brazilian Amblygonite/Montebrasite 0.644ct Loose Stone Sale price¥9,800

Brazilian Paraiba Tourmaline in Quartz 0.780ct Loose Stone Sale price¥15,800

[On Sale at 10 PM on October 31st] Russian Demantoid Garnet (Horsetail Recognized) 0.110ct Loose Sale price¥49,800

Russian Alexandrite 0.083ct loose stone Sale price¥69,800

[10/31 22:00 Sale] German Auchenite 0.063ct Loose Stone Sale price¥29,800

[10/31 22:00 Sale] German Auchenite 0.073ct Loose Stone Sale price¥32,800

[11/1 22:00 Sale] Brazilian Elestial Amethyst 1.378ct Loose Stone Sale price¥12,800

[11/1 22:00 Sale] Brazilian Elestial Amethyst 0.970ct Loose Stone Sale price¥7,980

[11/18 22:00 Sale] Colombian Euclase 1.817ct Loose Stone Sale price¥29,800

Vietnamese aquamarine 0.729ct loose stone Sale price¥8,800

Tibetan Andesine 0.361ct Loose Stone Sale price¥8,800

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.