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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 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 《Limited to 9 Stones》Blue Gem Gacha💎Paraiba Tourmaline (CuO:2.2%.MnO:3.5%)・Hauyne・Benitoite・Apatite《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 Pink tourmaline 0.795ct loose
Sold out Pt900 ブラジル産パライバトルマリン 0.11ct リング
Sold out 【Sales start 10 PM, May 17th】《Limited 12 Gems》Win a Shimizu Kiseki Sakura In-cut Diamond! 💎 Tourmaline Gacha (plus a bonus Sanje Tourmaline)《Multiple Purchase Discount Available》
Sold out ブラジル産パライバトルマリン 0.177ctルース
Sold out モザンビーク産パライバトルマリン 1.581ctルース
Sold out Brazilian Paraiba Tourmaline 0.216ct loose stone (CuO:1.2%, MnO:2.7%)
Sold out 【12562820掲載】ブラジル産バイカラートルマリン 7.445ctルース
Sold out 【12562701掲載】ブラジル産バイカラートルマリン 4.554ctルース
Sold out 【12562697掲載】トルマリン 5.620ctルース
Sold out アフガニスタン産インディゴライトトルマリン 1.729ctルース
Sold out ケニア産クロムトルマリン 0.501ctルース
Sold out Green tourmaline 2.144ct loose
Sold out ウォーターメロントルマリン 3.403ctルース
Sold out バイカラートルマリン 0.974ctルース
Sold out K18YG ベニトアイト 0.342ct リング
Sold out Bicolor tourmaline 3.242ct rough stone from Afghanistan
Sold out Brazilian Indicolite Tourmaline 0.342ct Loose
Sold out Brazilian bicolor tourmaline 1.016ct loose stone
Sold out Paraiba tourmaline from Brazil 0.066ct loose
Sold out K18/Pt950 Brazilian Paraiba tourmaline 0.071ct diamond ring (K18YG, CuO: 1.9%, MnO: 2.2%)
Sold out 18K Yellow Gold Brazilian Paraiba Tourmaline 0.048ct Diamond Pinky Ring (CuO: 1.7%, MnO: 2.2%)
Sold out Afghanistan Blue Tourmaline 4.0mm/0.268ct Loose Stone (Lagoon Tourmaline)
Sold out 0.361ct loose Brazilian Paraiba Tourmaline (CuO:1.0%, MnO:3.6%)
Sold out Brazilian Paraiba tourmaline 0.128ct loose stone (CuO: 1.7%, MnO: 3.4%)
Sold out Chrome tourmaline 0.300ct loose stone
Sold out Brazilian bicolor tourmaline 7.017ct loose stone
Sold out ブラジル産パライバトルマリン 0.420ct原石
Sold out モザンビーク産パライバトルマリン 0.229ctルース
Sold out 【KEN氏】ピンクトルマリン 4.0mm/0.300ctルース
Sold out ブラジル産ブルートルマリン 0.987ctルース(ティールカラー)
Sold out ブラジル産ピンクトルマリン 0.643ctルース
Sold out ブラジル産バイカラートルマリン 4.782ctルース
Sold out K18YG コーンフラワーブルーサファイア 4.5mm/0.41ct・アウイナイト・パライバトルマリン リング
Sold out ブラジル産インディゴライトトルマリン 0.210ctルース 鑑別書
Sold out ブラジル産インディゴライトトルマリン 0.724ctルース 鑑別書
Sold out ブラジル産ブルートルマリン 0.376ct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.