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 "

[E_27 Yurakucho Marui] Brazilian Paraiba Tourmaline 0.341ct loose stone (CuO:1.81%, MnO:1.96%) Nakahokan analysis report Sale price¥598,000

Pink tourmaline 0.692ct loose stone Sale price¥18,800

Pink tourmaline 0.845ct loose stone Sale price¥14,800

Unheated Brazilian Paraiba Tourmaline 0.058ct loose stone (CuO: 2.0%, MnO: 2.2%) Sale price¥59,800

Unheated Brazilian Paraiba Tourmaline 0.062ct loose stone (CuO: 1.7%, MnO: 2.5%) Sale price¥69,800

Unheated Brazilian Paraiba Tourmaline 0.056ct loose stone (CuO: 1.7%, MnO: 2.3%) Sale price¥59,800

Unheated Brazilian Paraiba Tourmaline 0.057ct loose stone (CuO: 1.6%, MnO: 2.4%) Sale price¥69,800

Unheated Brazilian Paraiba Tourmaline 0.056ct loose stone (CuO: 2.1%, MnO: 2.2%) Sale price¥69,800

Unheated Brazilian Paraiba Tourmaline 0.063ct loose stone (CuO: 1.8%, MnO: 2.4%) Sale price¥75,800

Unheated Brazilian Paraiba Tourmaline 0.066ct loose stone (CuO: 1.5%, MnO: 2.2%) Sale price¥69,800

Yellow tourmaline 0.238ct loose stone Sale price¥4,980

Unheated Brazilian Paraiba Tourmaline 0.025ct loose stone Sale price¥39,800

Pink tourmaline 1.157ct loose stone Sale price¥18,800

Unheated Brazilian Paraiba Tourmaline 0.038ct loose stone Sale price¥59,800

Unheated Brazilian Paraiba Tourmaline 0.046ct loose stone (CuO: 1.8%, MnO: 2.1%) Sale price¥69,800

Bicolor Tourmaline 0.991ct Loose Sale price¥29,800

Mozambique Elbaite Tourmaline 1.793ct Loose Stone Sale price¥49,800

Paraiba tourmaline from Brazil 0.071ct loose Sale price¥25,800

[Staff Selection] Brazilian Green Tourmaline 0.475ct Loose (Semi-Custom Made Set) Sale price¥47,800

【スタッフセレクション】【KEN氏】タンザニア産ピンクトルマリン 0.290ctルース（セミオーダーメイドセッ

[Staff Selection] [Mr. KEN] Tanzanian Pink Tourmaline 0.290ct Loose (Semi-Custom Made Set) Sale price¥74,800

Brazilian Indigolite Tourmaline 7.002ct Loose Stone, Japan-Germany Exchange Sale price¥198,000

【KEN氏】ブラジル産グリーントルマリン 5.2mm/0.584ctルース（セミオーダーメイドセット）

[Staff Selection] [Mr. KEN] Brazilian Green Tourmaline 5.2mm/0.584ct Loose Stone (Semi-Custom Made Set) Sale price¥47,800

非加熱ブラジル産パライバトルマリン 0.065ctルース（CuO:1.6%、MnO:2.4%）

Unheated Brazilian Paraiba Tourmaline 0.065ct loose stone (CuO: 1.6%, MnO: 2.4%) Sale price¥69,800

Paraiba Tourmaline from Mozambique 0.360ct loose stone Sale price¥18,800

モザンビーク産パライバトルマリン 0.784ctルース（CuO:0.3%,MnO:1.3%）

[12550887] Paraiba Tourmaline from Mozambique 0.784ct loose stone Sale price¥128,000

Unheated Brazilian Paraiba Tourmaline 0.047ct loose stone (CuO: 1.6%, MnO: 2.4%) Sale price¥98,000

[12550851] 2.944ct Mozambique pink tourmaline loose stone Sale price¥49,800

Unheated Brazilian Paraiba Tourmaline 0.053ct loose stone (CuO: 1.4%, MnO: 3.1%) Sale price¥62,800

Canary Yellow Tourmaline from Mozambique 0.170ct loose stone Sale price¥8,800

Canary Yellow Tourmaline from Mozambique 0.142ct loose stone Sale price¥8,800

Nigerian bicolor tourmaline 0.379ct loose stone Sale price¥8,800

非加熱ブラジル産パライバトルマリン 0.068ctルース（CuO:1.7%、MnO:2.4%）

[E_27 Yurakucho Marui Takeout] Unheated Brazilian Paraiba Tourmaline 0.068ct loose stone (CuO: 1.7%, MnO: 2.4%) Sale price¥69,800

非加熱ブラジル産パライバトルマリン 0.060ctルース（CuO:1.6%、MnO:2.3%）

Unheated Brazilian Paraiba Tourmaline 0.060ct loose stone (CuO: 1.6%, MnO: 2.3%) Sale price¥59,800

Canary Yellow Tourmaline from Mozambique 0.132ct loose stone Sale price¥8,800

Canary Yellow Tourmaline from Mozambique 0.190ct loose stone Sale price¥8,800

Brazilian Green Tourmaline 0.332ct Loose Stone Sale price¥9,800

Brazilian Green Tourmaline 0.376ct Loose Stone Sale price¥9,800

Brazilian Green Tourmaline 0.883ct Loose Stone Sale price¥19,800

Brazilian Green Tourmaline 0.825ct Loose Stone Sale price¥9,800

Brazilian Paraiba Tourmaline 0.360ct Loose GIA Sale price¥298,000

Brazilian Pink Tourmaline 0.418ct Loose Stone (Rouge Cut) Sale price¥9,800

[Rouge cut] Pink tourmaline 0.422ct loose stone Sale price¥6,980

Paraiba tourmaline from Brazil 0.154ct loose Sale price¥29,800

ブラジル産パライバトルマリン 0.233ctルース（CuO:1.6％.MnO:2.4％）

Brazilian Paraiba Tourmaline 0.233ct loose stone (CuO: 1.6%. MnO: 2.4%) Sale price¥358,000

モザンビーク産エルバイトトルマリン 1.371ctルース（CuO:0.2%,MnO:2.6%）

Elbaite tourmaline from Mozambique 1.371ct loose stone (CuO: 0.2%, MnO: 2.6%) Sale price¥59,800

Brazilian Green Tourmaline 12.252ct Loose Stone Sale price¥398,000

Paraiba tourmaline, pink sapphire, opal, pink spinel 13 stone half eternity ring set (2.0mm) Sale price¥98,000

Watermelon tourmaline 6.575ct rough stone Sale price¥9,800

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.

The fifth reprint has been decided and is now on sale at bookstores nationwide and online.

Written by KARATZ, book “Jewelry Illustrated Book”

The book provides explanations about over 300 types of gemstones, from new standard birthstones to rare stones that are hard to find, as well as a diary of our company representative, Mr. Koyama's, gemstone shopping experience in Thailand and Sri Lanka, and tips for photographing gemstones, allowing you to learn about the appeal of gemstones from various perspectives.

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