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 "

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¥88,000

Elbaite tourmaline from Mozambique 1.192ct loose stone (CuO: 0.1%, MnO: 1.5%) Sale price¥59,800

Green tourmaline 0.512ct loose stone Sale price¥9,800

Bicolor Tourmaline 13.489ct Loose Sale price¥9,800

Bicolor tourmaline 9.199ct loose stone Sale price¥9,800

Bicolor tourmaline 3.468ct loose stone Sale price¥6,980

Bicolor tourmaline 7.532ct loose stone Sale price¥9,800

Bicolor tourmaline 7.809ct loose stone Sale price¥9,800

Brazilian bicolor tourmaline 1.248ct loose stone Sale price¥18,800

Brazilian bicolor tourmaline 0.502ct loose stone Sale price¥12,800

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

Brazilian Paraiba Tourmaline 0.759ct rough stone Sale price¥45,800

非加熱ブラジル産パライバトルマリン 0.037ctルース（CuO:1.9%、MnO:2.3%）

Unheated Brazilian Paraiba Tourmaline 0.037ct loose stone (CuO: 1.9%, MnO: 2.3%) Sale price¥49,800

非加熱ブラジル産パライバトルマリン 0.067ctルース（CuO:1.4%、MnO:2.4%）

Unheated Brazilian Paraiba Tourmaline 0.067ct loose stone (CuO: 1.4%, MnO: 2.4%) Sale price¥59,800

K18PGブラジル産パライバトルマリン0.286ct・グランディディエライトリング GIA

K18PG Brazilian Paraiba Tourmaline 0.286ct Grandidierite Ring GIA Sale price¥198,000

非加熱ブラジル産パライバトルマリン 0.034ctルース（CuO:1.8%、MnO:2.4%）

Unheated Brazilian Paraiba Tourmaline 0.034ct loose stone (CuO: 1.8%, MnO: 2.4%) Sale price¥39,800

Unheated Brazilian Paraiba Tourmaline 0.071ct loose stone (CuO: 2.1%, MnO: 2.2%) Sale price¥59,800

Brazilian Paraiba Tourmaline 0.200ct loose stone (CuO: 1.7%, MnO: 2.8%) Sale price¥98,000

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

Brazilian Green Tourmaline 26.071ct Loose Stone (Sugarloaf Cut) Sale price¥298,000

ブラジル産バイカラートルマリン 6.928ctルース（バイカラーブルートルマリン）

Brazilian bicolor tourmaline 6.928ct loose stone (bicolor blue tourmaline) Sale price¥298,000

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¥55,800

Canary Yellow Tourmaline from Mozambique 0.223ct loose stone Sale price¥8,800

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¥69,800

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¥59,800

Brazilian Indigolite Tourmaline 1.109ct Loose Stone, Japan-Germany Exchange Sale price¥33,800

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

Brazilian Green Tourmaline 0.182ct Loose Stone Sale price¥8,800

モザンビーク産ピンクトルマリン 1.634ctルース（CuO:0.1%,MnO:0.1%）

Pink tourmaline from Mozambique 1.634ct loose stone (CuO: 0.1%, MnO: 0.1%) Sale price¥29,800

Tourmaline 1.099ct loose Sale price¥12,800

Myanmar Ubaite Tourmaline 4.0mm/0.251ct Loose Stone Sale price¥22,800

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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.