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 "

Brazilian Green Tourmaline 9.495ct Loose Sale price¥128,000

Brazilian Green Tourmaline 4.374ct Loose Stone Sale price¥88,000

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

Pt900 カナリーイエロートルマリン1.42ct・ダイヤモンド0.15ctペンダントトップ（ネックレストップ）鑑別書

[Item 22602731] [Colorifull] Pt900 Canary Yellow Tourmaline & 0.15ct Diamond Pendant Top (Necklace Top) with Identification Report Sale price¥158,000

Pt900 ピンクトルマリン 1.53ct ダイヤモンド 0.22ctペンダントトップ（ネックレストップ）鑑別書

[9/22 (Wed) 10 AM Deadline: Lottery Sale_15] Pt900 Pink Tourmaline 1.53ct & Diamond 0.22ct Pendant Top (Necklace Top) with Appraisal Report Sale price¥118,000

[Available 10/2 at 10 PM] Mozambique Paraiba Tourmaline 0.135ct Loose Stone Sale price¥7,980

[Available 10/2, 10:00 PM] Mozambique Paraiba Tourmaline 0.096ct Loose Gemstone Sale price¥6,980

[Deadline 8/29 | Lottery Sale] Brazilian Indicolite Tourmaline 2.587ct Loose Stone, with NGL Certificate Sale price¥98,000

【Lottery Sale 0818_08】Brazilian Bicolor Tourmaline 2.744ct Loose Stone with Certificate Sale price¥59,800

Brazilian parti-color tourmaline 2.702ct loose stone Sale price¥69,800

Pt900 トルマリンキャッツアイ 4.598ct ダイヤモンド0.20ctリング中央宝石研究所ソーティング

[Available 9/18 at 10:00 PM] [Coloriful] Pt900 Tourmaline Cat's Eye 4.598ct Diamond 0.20ct Ring Sale price¥98,000

アフガニスタン産バイカラートルマリン（通称名：バイカラールベライト） 2.736ctルース

Afghanistan Bicolor Tourmaline (also known as Bicolor Rubellite) 2.736ct loose stone Sale price¥69,800

アフガニスタン産バイカラートルマリン（通称名：バイカラールベライト） 3.512ctルース

Bicolor Tourmaline from Afghanistan (common name: Bicolor Rubellite) 3.512ct loose Sale price¥89,800

アフガニスタン産バイカラートルマリン（通称名：バイカラールベライト） 2.888ctルース

Afghanistan Bicolor Tourmaline (also known as Bicolor Rubellite) 2.888ct Loose Sale price¥79,800

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

K18YG ブラジル産パライバトルマリン 0.066ct ダイヤモンド0.091ctペンダント（ネックレス）ソーティング

[Lottery Sale 0829] K18YG Brazilian Paraiba Tourmaline 0.066ct Diamond 0.091ct Pendant (Necklace) with Sorting Sale price¥158,000

[9/7 10 PM Release] Brazilian Bicolor Tourmaline 3.337ct Loose Stone Sale price¥59,800

[Lottery Sale 3][For Winners Only][Listed as 22602615] K18/Pt950 Brazilian Paraiba Tourmaline 0.053ct Ring (CuO: 1.4%, MnO: 3.1%) Sale price¥158,000

[Available 9/5 at 10 PM] Brazilian Paraiba Tourmaline 4.022ct Loose Gemstone Sale price¥45,800

【9/5 22:00 Release】 Brazilian Paraiba Tourmaline 20.343ct Rough Stone Sale price¥15,800

[Available 9/5, 10 PM] 8.246ct Rough Paraiba Tourmaline from Brazil Sale price¥25,800

Mozambique Pink Tourmaline 1.122ct Loose Stone (Contains CuO) Sale price¥39,800

Lottery Sale 0812_15: Brazilian Indicolite Tourmaline 3.756ct Loose Stone with Japan-Germany Gemological Report Sale price¥98,000

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

Brazilian Paraiba Tourmaline 0.821ct rough stone Sale price¥39,800

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

[9/7 22:00 Release] Brazilian Bicolor Tourmaline 1.753ct Loose Stone Sale price¥29,800

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

Brazilian pink tourmaline 1.458ct loose stone Sale price¥39,800

Brazilian Tourmaline (untreated) 5.120ct loose stone Sale price¥39,800

Brazilian Indigolite Tourmaline 1.514ct Loose Stone, Japan-Germany Exchange Sale price¥55,800

Brazilian Particolor Paraiba Tourmaline 0.490ct Loose (Bicolor Paraiba Tourmaline) GIA Sale price¥398,000

Pt900/Pt850 ピンクトルマリン 1.10ct ダイヤモンド0.02ctペンダント（ネックレス）鑑別書

[22602719 Posted] [Calafuri] Pt900/Pt850 Pink Tourmaline 1.10ct Diamond 0.02ct Pendant (Necklace) with Certificate Sale price¥98,000

[Available 9/1 at 10 PM] Afghan Mint Color Tourmaline 0.290ct Loose Stone Sale price¥14,800

【Lottery Sale ②_202608_15】Tanzanian Chrome Tourmaline 2.271ct Loose Stone Sale price¥98,000

[On sale August 22nd, 10 PM JST] Brazilian pink tourmaline 4.9mm/0.400ct loose stone, Hōki Kyō Sale price¥15,800

[12563744 listed] Bi-color Tourmaline from Brazil 1.153ct Loose Stone Sale price¥12,800

[On sale August 28, 10 PM] Nigerian Indicolite Tourmaline 0.340ct Loose Stone with Certificate Sale price¥29,800

[Sale on 8/28 at 10 PM] Nigerian Indicolite Tourmaline 0.242 ct Loose Stone with Certificate Sale price¥22,800

[Listed as 12563729] Brazilian Indicolite Tourmaline 0.389ct Loose Sale price¥38,800

[Posted as 12563742] Brazilian Bicolor Tourmaline, 1.524 ct loose stone Sale price¥18,800

[Lottery Sale ②_202608_16] Loose Brazilian Parti-Color Tourmaline 15.355ct Sale price¥39,800

K18WG パライバトルマリン 0.09ct・ダイヤモンド0.06ctリング（CuO:1.0%、MnO:0.4%）ソーティング（一般社団法人宝石貴金属協会）

[22602666 listed] [Colorful] K18WG Paraiba Tourmaline 0.09ct Ring Sale price¥198,000

Brazilian bicolor tourmaline 7.489ct loose Sale price¥39,800

Brazilian Paraiba Tourmaline 0.068ct loose stone Sale price¥61,800

[On sale August 9, 10 PM] Nigerian Indicolite Tourmaline 0.241ct Loose Stone with Certification Sale price¥25,800

[On sale August 11th at 10 PM] Brazilian Pink Tourmaline 0.689ct Loose Stone with Appraisal Sale price¥15,800

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

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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

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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.