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 "

Pink tourmaline 0.539ct loose stone (heart shape) Sale price¥9,800

K18WG クロムトルマリン 0.70ctct・サファイア0.30ctペンダントトップ（ネックレストップ）鑑別書

[Colorful] K18WG Chrome Tourmaline 0.70ct and Sapphire 0.30ct Pendant Top (Necklace Top) with Appraisal Report Sale price¥79,800

Loose 0.239ct Paraiba Tourmaline from Brazil (CuO: 0.8%, MnO: 3.7%) Sale price¥45,800

ブラジル産パライバトルマリン 3.1mm/0.151ctルース（CuO:1.1%、MnO:3.8%）

Brazilian Paraiba Tourmaline 3.1mm/0.151ct Loose Stone (CuO:1.1%, MnO:3.8%) Sale price¥29,800

ブラジル産パライバトルマリン 0.265ctルース（CuO:0.7%、MnO:3.0%）

Paraiba Tourmaline from Brazil 0.265ct Loose (CuO: 0.7%, MnO: 3.0%) Sale price¥29,800

ブラジル産パライバトルマリン 0.205ctルース（CuO:0.8%、MnO:3.1%）

Brazilian Paraiba Tourmaline 0.205ct Loose Stone (CuO: 0.8%, MnO: 3.1%) Sale price¥39,800

ブラジル産パライバトルマリン 0.211ctルース（CuO:0.6%,MnO:3.1%）

Brazilian Paraiba Tourmaline 0.211ct Loose (CuO:0.6%, MnO:3.1%) Sale price¥39,800

Blue watermelon tourmaline 6.815ct loose Sale price¥49,800

Brazilian Paraiba Tourmaline 0.065ct Loose Stone (CuO: 2.0%, MnO: 2.4%) Sale price¥49,800

0.066ct loose Brazilian Paraiba Tourmaline (CuO: 1.5%, MnO: 2.2%) Sale price¥45,800

Paraiba Tourmaline from Brazil, 0.063 ct, loose (CuO: 1.8%, MnO: 2.4%) Sale price¥55,800

Loose 0.061ct Brazilian Paraiba Tourmaline (CuO: 1.7%, MnO: 2.2%) Sale price¥49,800

Paraiba Tourmaline from Brazil 0.056ct loose stone (CuO: 1.7%, MnO: 2.3%) Sale price¥45,800

0.062ct Loose Paraiba Tourmaline from Brazil (CuO: 1.7%, MnO: 2.5%) Sale price¥47,800

Brazilian Paraiba Tourmaline 0.058ct Loose Gemstone (CuO: 2.0%, MnO: 2.2%) Sale price¥39,800

Pink tourmaline 0.845ct loose stone Sale price¥12,800

Paraiba tourmaline from Brazil 0.061ct loose Sale price¥25,800

Paraiba tourmaline from Brazil 0.049ct loose Sale price¥19,800

Paraiba tourmaline from Brazil 0.018ct loose Sale price¥12,800

Bicolor tourmaline 4.448ct loose stone Sale price¥55,800

Brazilian Seafoam Tourmaline, 4.1mm/0.303ct loose stone Sale price¥16,800

Brazilian Seafoam Tourmaline, 4.1mm/0.280ct Loose Sale price¥15,800

Paraiba tourmaline from Brazil 0.071ct loose Sale price¥19,800

Untreated Color-Change Brazilian Paraiba Tourmaline 0.050ct Loose Stone GIA Sale price¥128,000

Pink tourmaline 1.157ct loose stone Sale price¥12,800

Brazilian Indigolite Tourmaline 1.247ct Loose Stone, Japan-Germany Exchange Sale price¥98,000

Brazilian Paraiba Tourmaline 0.038ct Loose Stone (CuO:1.3%, MnO:2.7%) Sale price¥35,800

Brazilian Paraiba Tourmaline 0.041ct Loose (CuO:1.9%, MnO:4.3%) Sale price¥39,800

Brazilian Paraiba Tourmaline 0.038ct Loose Stone (CuO:1.6%, MnO:2.8%) Sale price¥45,800

Paraiba Tourmaline from Brazil 0.037ct loose stone (CuO:1.4%, MnO:2.6%) Sale price¥25,800

Brazilian Paraiba Tourmaline 0.050ct Loose Stone (CuO:1.9%, MnO:3.6%) Sale price¥39,800

Paraiba Tourmaline from Brazil, 0.039ct loose stone (CuO:1.6%, MnO:2.9%) Sale price¥35,800

0.035ct loose Brazilian Paraiba Tourmaline (CuO:1.6%, MnO:3.3%) Sale price¥29,800

Pink tourmaline 6.1mm/1.031ct loose stone Sale price¥12,800

Pink tourmaline 0.466ct loose Sale price¥8,800

Pt900 ブラジル産パライバトルマリン 0.06ct ペンダント（ネックレス）

[Colorful] Pt900 Paraiba Tourmaline 0.06ct from Brazil and Diamond 0.18ct Pendant Top (CuO:2.6%, MnO:3.5%) Sale price¥69,800

ブラジル産トリカラートルマリン 32.207ctルース (パーティカラートルマリン）

Brazilian Tricolor Tourmaline 32.207ct Loose (Parti-color Tourmaline) Sale price¥398,000

Brazilian Paraiba Tourmaline 0.170ct Loose Stone (CuO: 2.1%, MnO: 1.1%) Sale price¥258,000

Brazilian Indicolite Tourmaline 0.352ct Loose Stone with Certification Sale price¥29,800

モザンビーク産エルバイトトルマリン 1.456ctルース（CuO:0.1%,MnO:0.4%）

Elbaite tourmaline from Mozambique 1.456ct loose stone (CuO: 0.1%, MnO: 0.4%) Sale price¥45,800

モザンビーク産エルバイトトルマリン 1.574ctルース（CuO:0.1%,Mn0:3.1％）

Elbaite tourmaline from Mozambique 1.574ct loose stone (CuO: 0.1%, Mn0: 3.1%) Sale price¥55,800

Yellow tourmaline 0.277ct loose Sale price¥6,980

Green tourmaline 0.559ct loose Sale price¥6,980

Pink tourmaline 0.632ct loose Sale price¥9,800

Pink tourmaline 1.575ct loose Sale price¥12,800

Brazilian Bicolor Tourmaline 0.780ct Loose Sale price¥12,800

《New Arrivals from Tucson・Limited to 9 Stones》Canary Yellow Tourmaline from Zambia, average 0.18ct《Multi-purchase discount available》 Sale price¥3,980

Unheated Brazilian Paraiba tourmaline 0.110ct loose AIGS Sale price¥258,000

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.