La line

American red beryl 0.143ct loose Sale price¥35,800

[KalaFuri] K18 Rhodochrosite 0.77ct Ring with Certification Sale price¥39,800

Ruby 0.820ct Loose Gem (Hohki-kyo) Sale price¥39,800

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） 1.101ctルース

6.0mm/1.101ct Loose Andesine-Labradorite from Madagascar (common name: Rainbow Moonstone) Sale price¥16,800

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） 0.556ctルース

Madagascar Andesine-Labradorite (Commonly known as Rainbow Moonstone) 0.556ct Loose Stone Sale price¥8,800

0.464 ct Mozambique Ruby Loose Stone with Identification Report Sale price¥29,800

American red beryl 0.160ct loose Sale price¥89,800

Detroit City Rhodochrosite 4mm/0.434ct Loose Stone Sale price¥8,800

Unheated Mozambique Ruby 2.7mm/0.135ct Loose Sale price¥19,800

Brazilian Lazulite 0.052ct Loose Stone with Certificate Sale price¥32,800

《Limited to 11 stones》Brazilian Mica in Rose Quartz (Mica in Rose Quartz) 1 stone 《Bulk purchase discount available》 Sale price¥3,980

奈良県天川村産レインボーガーネット（アンドラダイトガーネット） 2.678ctルース

Rainbow Garnet (Andradite Garnet) from Tenkawa Village, Nara Prefecture 7.4mm/2.678ct Loose Stone Sale price¥15,800

Brazilian Lazuilte (Lazulite) 0.066ct Loose Stone with Certificate Sale price¥39,800

Ruby 0.286ct Loose Stone with Certificate Sale price¥22,800

[Calafuri] Pt900 Synthetic Ruby 1.61ct, Diamond 0.25ct Ring with Central Gem Lab Sale price¥98,000

[Colorful] K18 Ruby 0.33ct/Diamond Pendant Top (Necklace Top) with Identification Report Sale price¥69,800

Pt900 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） 0.5ct ペンダントトップ（ネックレストップ）

[Colorful] Pt900 Andesine/Labradorite (commonly known as Rainbow Moonstone) 0.5ct Pendant Top with Identification Report Sale price¥18,800

Ruby 0.528ct Loose Stone with Gem Identification Report Sale price¥28,800

ブラジル産マイカインローズクォーツ（雲母インローズクォーツ） 4.040ctルース

4.040 ct loose Brazilian mica in rose quartz Sale price¥5,980

ブラジル産マイカインローズクォーツ（雲母インローズクォーツ） 7.882ctルース

Brazilian Mica in Rose Quartz (雲母 in Rose Quartz) 7.882ct Loose Sale price¥9,800

【12562772掲載】ブラジル産マイカインローズクォーツ（雲母インローズクォーツ） 7.044ctルース

Brazilian Mica-in-Rose Quartz (Mica-included Rose Quartz) 7.044ct Loose Gemstone Sale price¥8,800

Brazilian Mica in Rose Quartz Loose Stone 3.245ct Sale price¥5,980

Brazilian Mica in Rose Quartz 8.773ct Loose Stone Sale price¥9,800

【12562768掲載】ブラジル産マイカインローズクォーツ（雲母インローズクォーツ） 8.477ctルース

Brazilian Mica in Rose Quartz Cabochon, 8.477ct Sale price¥11,000

Burmese ruby 3.72ct loose GIA/CGL Sale price¥298,000

Rhodochrosite from Detroit City, USA 3.1mm/0.154ct loose stone Sale price¥19,800

Rhodochrosite from Detroit City, USA 3.2mm/0.150ct loose stone Sale price¥19,800

奈良県天川村産レインボーガーネット（アンドラダイトガーネット） 1.533ctルース

Rainbow garnet (andradite garnet) from Tenkawa Village, Nara Prefecture 1.533ct loose Sale price¥6,980

Tanzanian Rhodolite Garnet 5.9mm/1.084ct Loose Sale price¥12,800

Lazurite (Lapis Lazuli) from Pakistan 0.173ct Loose Stone with Gemstone Identification Report Sale price¥34,800

Pakistani Lapis Lazuli (Lazurite) 0.150ct Loose Stone with Certificate Sale price¥29,800

Finnish Labradorite 56.209ct Loose Gemstone Sale price¥16,800

Dominican Republic Larimar, 33.829ct Loose Stone, Japan-Germany Gemological Report Sale price¥49,800

Tanzanian Rhodolite Garnet 0.609ct Loose Gemstone Sale price¥8,800

Brazilian Rubellite 0.340ct Loose Stone with Appraisal Sale price¥25,800

Mozambican Rhodolite Garnet 1.890ct Loose Stone Sale price¥18,800

インド産アンデシン・ラブラドライト（通称名レインボームーンストーン） 0.397ctルース

Indian Andesine Labradorite (also known as Rainbow Moonstone) 0.397ct loose stone Sale price¥12,800

South African Rhodochrosite Loose Stone 0.749 ct Sale price¥98,000

インド産アンデシン・ラブラドライト（通称名レインボームーンストーン） 0.468ctルース

Indian Andesine Labradorite (also known as Rainbow Moonstone) 0.468ct loose stone Sale price¥12,800

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） 0.511ctルース

Andesine Labradorite (also known as Rainbow Moonstone) 5.4mm/0.511ct loose stone Sale price¥15,800

18K Yellow Gold Ruby Ring (Pigeon Blood Color) Sale price¥128,000

[Dandelion cut] Rhodochrosite from South Africa 2.244ct loose with emblem Japanese-German edition Sale price¥298,000

South African rhodochrosite 2.477ct loose Japanese-German edition Sale price¥398,000

Brazilian Lazulite 0.067ct Loose with certificate Sale price¥39,800

Lazurite from Brazil (0.044ct loose stone) with a certificate of authenticity Sale price¥29,800

Brazilian Lazulite 0.035ct Loose Stone with Certificate Sale price¥24,800

South African Rhodochrosite 1.820ct Loose Stone Sale price¥128,000

Rutilated Quartz (Rutile Quartz) 7.440ct Loose (Sun Rutilated Quartz) Sale price¥18,800

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.