1.0ct - 2.0ct

[Available 10/12 at 10 PM] Indian Iolite Sunstone 1.320ct Loose Gemstone Sale price¥9,800

[Available 10/12 at 10 PM] Indian Iolite Sunstone 1.225ct Loose Gemstone Sale price¥9,800

[Available Oct 12, 10 PM] Indian Iolite Sunstone 1.113ct Loose Gemstone Sale price¥11,800

[Available 10/12 at 10:00 PM] Indian Iolite Sunstone 1.064ct Loose Gemstone Sale price¥9,800

[Available 10/11 at 10 PM] Indian Iolite Sunstone 1.084ct Loose Gemstone Sale price¥8,800

[10/11 10 PM Release] Indian Iolite Sunstone 7.0mm/1.232ct Loose Gemstone Sale price¥8,800

[Item 12564459] Nepalese Kyanite 1.017ct Loose Gemstone Sale price¥9,800

[Item 12564297] Phenakite from Malyshevo, Russia, 1.491ct Loose Stone Sale price¥53,800

[Available 10/4, 10:00 PM] Mongolian Andesine 8.1mm/1.935ct Loose Gemstone Sale price¥18,800

[10/4 10:00 PM Release] Mongolian Bicolor Andesine 8.0mm/1.861ct Loose Gemstone Sale price¥18,800

[Available 10/4, 10:00 PM] Mongolian Color-Change Andesine 8.0mm/1.829ct Loose Stone Sale price¥18,800

[10/10 10:00 PM Release] Mongolian Color-Change Andesine 7.0mm/1.327ct Loose Gemstone Sale price¥14,800

[Available 10/4, 10 PM] Synthetic Ruby 1.803ct Loose Gemstone Sale price¥18,800

[10/4, 10:00 PM Sale] Synthetic Ruby 1.182ct Loose Stone Sale price¥12,800

[Available 10/12 at 22:00] Brazilian Color-Shift Amethyst 1.614ct Loose Gemstone Sale price¥8,800

[Available 10/12 at 10 PM] Brazilian Color-Shift Amethyst 1.690ct Loose Gemstone Sale price¥9,800

[Oct 8, 10 PM Release] Brazilian Color-Shift Amethyst 7.7mm/1.607ct Loose Stone Sale price¥9,800

[Available Oct 5, 10:00 PM] Malawi Moonstone 1.640ct Loose Stone Sale price¥9,800

[10/5 10 PM Sale] Malawi Moonstone 1.886ct Loose Stone Sale price¥11,800

[Deadline: Sat, Sep 5, 10:00 AM: Lottery Sale_09] Sri Lankan Unheated Color-Change Sapphire 1.170ct Loose Stone, GIA certified Sale price¥188,000

[Item 12564350] Ethiopian Sunstone 1.228ct Loose Gemstone Sale price¥18,800

[On sale 9/30 at 22:00] Malawi Moonstone 1.388ct Loose Stone Sale price¥8,800

[Available 9/26 at 10 PM] Malawi Moonstone Loose Gemstone 1.966ct Sale price¥11,800

[Available 9/30 at 10 PM] Nepal Kyanite 1.216ct Loose Gemstone (Royal Blue Color) Sale price¥15,800

[9/27 10:00 PM Release] Oregon Sunstone (USA) 6.9mm/1.093ct Loose Gemstone Sale price¥29,800

[9/27 10:00 PM Release] Oregon Sunstone (USA) 6.9mm/1.094ct Loose Gemstone Sale price¥39,800

[Available 10/9 at 10 PM] Mongolian Andesine 7.0mm/1.236ct Loose Gemstone Sale price¥12,800

[Available 9/23 at 10:00 PM] Sri Lankan Moonstone 1.440ct Loose Gemstone Sale price¥15,800

マダガスカル産アンデシン・ラブラドライト（通称名レインボームーンストーン） 1.742ctルース

Andesine-Labradorite (commonly known as Rainbow Moonstone) from Madagascar, 1.742ct loose gemstone Sale price¥37,800

[9/18 10:00 PM Release] Brazilian Dendritic Agate 1.056ct Loose Stone Sale price¥3,980

[Sales start 9/18 at 22:00] Zimbabwe Bicolor Euclase 1.355ct Rough Stone Sale price¥25,800

[Available 9/19 at 10 PM] Oregon Sunstone 1.002ct Loose Gemstone Sale price¥6,980

[Available 9/19 at 10 PM] Brazilian Lavender Quartz (Skorolite) 1.154ct Loose Gemstone Sale price¥8,800

[Available 9/19 at 10:00 PM] 1.645ct Colombian Emerald Rough Stone Sale price¥49,800

[Available 9/30 at 10 PM] Tanzanian Almandine Garnet 1.210ct Loose Gemstone Sale price¥18,800

[Available 9/23 at 10 PM] Tanzanian Almandine Garnet 1.267ct Loose Gemstone Sale price¥14,800

[Available 9/27 at 10 PM] Brazilian Bicolor Topaz 1.932ct Loose Stone Sale price¥19,800

Brazilian Rubellite 1.027ct Loose Stone Sale price¥69,800

Elbaite tourmaline from Mozambique 1.192ct loose stone (CuO: 0.1%, MnO: 1.5%) Sale price¥55,800

Tanzanian Zoisite 1.000ct Loose Stone Sale price¥18,800

YAG (Yttrium Aluminum Garnet) 6.5mm/1.551ct Loose Stone Sale price¥15,800

YAG (Yttrium Aluminum Garnet) 7mm/1.686ct Loose Stone Sale price¥12,800

Tanzania Bicolor Zoisite 1.608ct Rough Stone Sale price¥8,800

【202608GIA Appraisal Request】【On Sale June 5th, 10 PM】Russian Demantoid Garnet (with horsetail inclusion) 6.8mm/1.366ct Loose Stone with Appraisal Report Sale price¥458,000

[Available 9/11 at 10 PM] Almandine Garnet from Tanzania, 1.354ct Loose Gemstone Sale price¥15,800

[Available 9/11 at 10:00 PM] Mexican Fire Opal (faceted cut) 1.255ct loose stone Sale price¥49,800

[Available 10/9, 10 PM] Sri Lankan Green Zircon 1.113ct Loose Gemstone Sale price¥9,800

[9/24 10 PM Sale] Hunan, China Cinnabar 1.654ct Loose Stone with Identification Report Sale price¥19,800

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.