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tourmaline

Tourmaline is one of the birthstones for October. It is a gemstone with so many color variations that it is said that there is no such thing as a non-existent color, and some gemstones show multiple colors within a single stone. It has the property of generating static electricity when heated, and its Japanese name is "tournament stone." Some are called by specific names depending on their color.

Karatz GemMagazine
" Tourmaline "

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Sold out Rare Stone Gacha 💎 Mozambique Paraiba Tourmaline, normally priced at ¥29,800, 1.8ct with a Shanshan appraisal certificate, Kornerupine, Epidote (Multiple purchase discount available)
Sold out Limited Edition of 10 Blue Gemstones! 💎 0.142ct Brazilian Paraiba Tourmaline, Euclase from Zimbabwe, 1.17ct Cobalt Spinel (Certificate of Authenticity: Color Shift), Benitoite, and More! Discounts Available for Multiple Purchases!
Sold out Limited to 13 stones! Bicolor Gacha 💎 Bicolor Sphene, usually priced at ¥79,800, Party-color Paraiba Tourmaline, usually priced at ¥39,800, and more. (Multiple Purchase Discount Available)
Sold out Brazilian Paraiba Tourmaline (CuO: 2.3% and CuO: 1.4%) & Kornerupine Rough Gacha 《Multiple Purchase Discount Available》
Sold out Blue Stone Gacha💎 (Brazilian Paraiba Tourmaline, Mozambique Paraiba Tourmaline, German Auchenite, Benitoite) {Multiple Purchase Discounts Available}
Sold out Limited Edition of 11 Rare Stones! 💎 Two 0.23ct Paraiba Tourmalines from Batalha, Brazil, a Pink Diamond, and a Benitoite Loose Stone. Discounts available for multiple purchases.
Sold out Mini Kite Cut Loose Stone (Includes 2 Paraiba Tourmalines, Green Beryl, Ruby, Peridot, etc.) {Multiple Purchase Discounts Available}
Sold out Panda Cut Gacha💎 Brazilian Paraiba Tourmaline (0.226ct/CuO: 0.7%, MnO: 2.5%) - 1 Stone, 5 Panda Cut Stones (Multiple Purchase Discounts Available)
Sold out Limited to 9 stones: Carving Gacha (Opal, Tourmaline, Tsavorite Garnet) 1 loose stone (Multiple purchase discounts available)
Sold out Zambian Canary Yellow Tourmaline (4.0mm/Round Cut) Loose Stone - Limited 5 Pieces (Multiple Purchase Discount Available)
Sold out Limited to 4 stones: Carving Gacha (pink tourmaline, average 3.4 carats) 1 loose stone (multiple purchase discounts available)
Sold out 《Limited to 7 stones》1 stone tourmaline in quartz from Sri Lanka loose (8-9mm, octagonal cut)《Multiple purchase discount available》
Sold out ブラジル産インディゴライトトルマリン 0.105ctルース
Sold out Brazilian Paraiba Tourmaline (cabochon cut, approximately 2.2mm) 1 loose stone (multiple purchase discounts available)
Sold out Brazilian Paraiba Tourmaline (cabochon cut, approximately 2.2mm) 1 loose stone (multiple purchase discounts available)
Sold out Limited to 12 stones! Gemstone Gacha including Brazilian Paraiba Tourmaline rough stone 💎 1 rough stone (Multiple purchase discounts available)
Sold out ブラジル産パライバトルマリン 0.240ctルース
Sold out ブラジル産パライバトルマリン 8.863ct原石
Sold out ブラジル産パライバトルマリン 8.135ct原石
Sold out グリーントルマリン 0.512ctルース
Sold out K18WG ブルーサファイア パライバトルマリン、アクアマリン、エメラルド、アイスブルーダイヤモンド(トリートメント)、ブルーサファイア、イエローサファイア、アパタイト、ペリドット、タンザナイト、ブルートパーズリング鑑別書
Sold out Pt900ブラジル産シーフォームトルマリン 4mm/0.32ct ・ダイヤモンド0.16ctペンダントトップ(ネックレストップ)鑑別書
Sold out K18YG ブラジル産パライバトルマリン 0.095ct ダイヤモンド0.097ctリングソーティング
Sold out ナイジェリア産インディゴライトトルマリン 0.341ctルース
Sold out ナイジェリア産インディゴライトトルマリン 0.308ctルース
Sold out ブラジル産パーティカラートルマリン 6.799ctルース
Sold out ブラジル産グリーントルマリン 1.940ctルース
Sold out K18 ブラジル産パライバトルマリン 0.080ct・ダイヤモンド0.56ctペンダントトップ(ネックレストップ)(CuO:2.3%、MnO:0.6%)
Sold out ブラジル産グリーントルマリン 0.906ctルース
Sold out ブラジル産トルマリンキャッツアイ 13.617ctルース
Sold out ブラジル産バイカラートルマリン 3.473ctルース
Sold out K18/Pt950 ブラジル産パライバトルマリン 0.045ct リング
Sold out 【さくらインカット】コンゴ産ピンクトルマリン 6.6mm/0.819ctルース 鑑別書
Sold out ブラジル産パライバトルマリン 0.056ctルース
Sold out Brazilian Green Tourmaline 0.825ct Loose Stone
Sold out Limited to 10 stones: Brazilian Bicolor Tourmaline (Baguette Cut) - 1 loose stone. Discounts available for multiple purchases.
Sold out ブラジル産バイカラーパライバトルマリン 0.190ctルース
Sold out Pt950 ブラジル産パライバトルマリン 0.043ct リング
Sold out K18/Pt950 ブラジル産パライバトルマリン 0.064ct ペンダントトップ(ネックレストップ)
Sold out Unheated Brazilian Paraiba Tourmaline 0.088ct loose stone (CuO: 1.9%, MnO: 2.3%)
Sold out 【さくらインカット】コンゴ産ピンクトルマリン 7.0mm/1.056ctルース 鑑別書
Sold out ブラジル産ピンクトルマリン 0.470ctルース
Sold out ブルーウォーターメロントルマリン 2.380ctルース
Sold out Paraiba tourmaline from Brazil 0.023ct loose
Sold out ブラジル産シーフォームトルマリン 0.334ctルース
Sold out ブラジル産シーフォームトルマリン 0.347ctルース
Sold out モザンビーク産エルバイトトルマリン 1.793ctルース
Sold out クロムトルマリン 0.760ctルース

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.