pear shape

Brazilian Mint-Colored Tourmaline 0.294ct Loose Stone Sale price¥15,800

[Available 10/10 at 22:00] Brazilian Limonite-in-Topaz 3.194ct Loose Gemstone Sale price¥7,980

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

[Available 10/12 at 10 PM] Tanzanian Sunstone (Illusion Sunstone) 2.888ct Loose Gemstone Sale price¥9,800

[10/15 10 PM Sale] Tanzanian Sunstone (Illusion Sunstone) 5.158ct Loose Gemstone Sale price¥15,800

[Available Oct 11, 10 PM] Colombian Pyrite and Mica in Emerald 0.432ct Loose Stone with Identification Report Sale price¥35,800

[On sale 10/8 at 22:00] Phenakite from Malyshevo, Russia, 0.366ct loose stone Sale price¥18,800

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

[Item 12564511] Russian Alexandrite 0.103ct Loose Stone Sale price¥128,000

[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

[9/26 10:00 PM Release] Malawi Moonstone 2.340ct Loose Stone Sale price¥14,800

[9/27 10 PM Sale] Colombian Emerald 0.148ct Loose Stone Sale price¥29,800

[Available 10/7, 10:00 PM] Colombian Emerald 0.145ct Loose Stone Sale price¥35,800

[Lottery Sale 0818_12] Loose 0.251ct Red Beryl (USA) with Certificate Sale price¥98,000

[#202607 Akihabara Pop-up Store Takeout][Shinjuku Marui Annex 202605 Takeout][12548265 Listed] Padparadscha Sapphire 0.545ct Loose Stone Sale price¥69,800

アフガニスタン産アフガニスタン産ラズライトインソーダライト 0.425ctルース

[Available 9/18 10:00 PM] Lazulite in Sodalite from Afghanistan 0.425ct Loose Gemstone Sale price¥9,800

Colombian pyrite-mica emerald 0.628ct loose stone Sale price¥29,800

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

非加熱ブラジル産パライバトルマリン 0.051ctルース（CuO:2.0%、MnO:2.3%）

Unheated Brazilian Paraiba Tourmaline 0.051ct loose stone (CuO: 2.0%, MnO: 2.3%) Sale price¥39,800

Tanzanian Dragon Garnet 0.748ct Loose Stone Sale price¥18,800

【Lottery Sale 0818_02】Brazilian Fanaizinho Sphene 0.956ct Loose Stone with Certificate Sale price¥19,800

Zimbabwean Apatite (UV Type) 0.585ct Loose Sale price¥8,800

Brazilian Morganite 4.720ct loose stone Sale price¥98,000

【12551314掲載】ジンバブエ産ブルーアパタイト（UVタイプ） 1.019ctルース

Zimbabwean Blue Apatite (UV Type) 1.019ct Loose Sale price¥8,800

Bicolor Euclase from Zimbabwe 0.033ct loose Sale price¥18,800

Paraiba Tourmaline from Brazil 0.067 ct loose (CuO: 1.4%, MnO: 2.4%) Sale price¥39,800

Tanzania Bicolor Zoisite 0.397ct Loose Stone Sale price¥8,800

Zimbabwean Blue Apatite (UV type) 1.056ct loose stone Sale price¥9,800

ブラジル産パライバトルマリン 0.239ctルース（CuO:1.0%、MnO:3.9%）

Brazilian Alexandrite 0.239ct Loose Gemstone [Listed as 12564071] Sale price¥45,800

ブラジル産レインボーアクアマリン（イリデッセンスアクアマリン） 1.358ctルース

[On sale 9/6 at 22:00] Brazilian Rainbow Aquamarine (Iridescent Aquamarine) 1.358ct Loose Gemstone Sale price¥12,800

ブラジル産レインボーアクアマリン（イリデッセンスアクアマリン） 1.574ctルース

[Available 9/7 at 10 PM] Brazilian Rainbow Aquamarine (Iridescent Aquamarine) 1.574ct Loose Stone Sale price¥14,800

ブラジル産レインボーアクアマリン（イリデッセンスアクアマリン） 1.507ctルース

【Available 9/10 at 10 PM】 Brazilian Rainbow Aquamarine (Iridescent Aquamarine) 1.507ct Loose Stone Sale price¥12,800

ブラジル産レインボーアクアマリン（イリデッセンスアクアマリン） 1.930ctルース

[Available 9/10 at 10 PM] Brazilian Rainbow Aquamarine (Iridescence Aquamarine) 1.930ct Loose Stone Sale price¥18,800

[Available 9/7 at 10 PM] Mahenge Spinel (Pink Spinel) from Tanzania, 0.386ct loose stone Sale price¥15,800

非加熱ブラジル産パライバトルマリン 0.079ctルース（CuO:1.8%、MnO:2.6%）

Unheated Brazilian Paraiba Tourmaline 0.079ct loose stone (CuO: 1.8%, MnO: 2.6%) Sale price¥45,800

[Lottery Sale 0731_06] Colombian Pyrite in Emerald 2.988 ct Loose Stone with Japanese and German Gemological Certificates Sale price¥228,000

[Lottery Sale 0731_10] Colombian Muzo Non-Oil Emerald 0.370ct Loose GIA Sale price¥298,000

[Lottery Sale 0825_10] Colombian Non-Oil Emerald 0.090ct Loose GIA Sale price¥128,000

[Lottery Sale 0812_18] Zambian Non-Oil Emerald 0.540ct Loose GIA Sale price¥178,000

[Available 8/29 at 10 PM] Madagascar Andalusite 0.454ct Loose Gemstone Sale price¥7,980

【#202607 Akihabara Pop-up Store - Currently Removed from Stock】【Listed on 12563192】Unheated Ruby 0.210ct Loose Stone Sale price¥62,800

【9/1 10 PM Release】Colombian Emerald 0.123ct Loose Gemstone Sale price¥18,800

[Available 9/1 at 10 PM] Tanzanian Tsavorite 0.366ct Loose Stone Sale price¥13,800

[9/2, 10 PM release] Madagascar Padparadscha Sapphire 0.497ct Loose Stone, DGL Certified Sale price¥69,800

[Available 9/2 at 10 PM] Mahenge Spinel (Pink Spinel) from Tanzania, 0.366ct Loose Stone, with Identification Report Sale price¥39,800

[On sale 9/3 at 22:00] Sri Lankan Purple Sapphire 0.556ct Loose Gemstone with Identification Report Sale price¥55,800

【Available 9/3 at 10:00 PM】 Sri Lankan Purple Sapphire 0.376ct Loose Stone with Appraisal Report Sale price¥35,800

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.