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 "

Congo Pink Tourmaline 5.0mm/0.463ct Loose Stone Sale price¥24,800

Brazilian mint color tourmaline 0.145ct loose stone Sale price¥8,800

Brazilian green tourmaline 0.194ct loose stone Sale price¥12,800

Brazilian green tourmaline 0.755ct loose stone Sale price¥18,800

Brazilian green tourmaline 0.374ct loose stone Sale price¥9,800

【KEN氏】アフリカ産バイカラートルマリン 0.950ctルース（ファントムカット） - カラッツSTORE

African bicolor tourmaline 0.950ct loose stone (phantom cut) Sale price¥9,800

Bicolor tourmaline 1.050ct loose Sale price¥8,800

Bicolor tourmaline 0.780ct loose Sale price¥9,800

Pink tourmaline cat's eye 3.800ct loose Sale price¥8,800

ブラジル産パライバトルマリン 0.224ctルース（CuO:0.8%、MnO:1.7%）

Paraiba tourmaline from Brazil 0.224ct loose (CuO:0.8%, MnO:1.7%) Sale price¥29,800

ブラジル産パライバトルマリン 0.203ctルース（CuO:0.9%、MnO:2.6%）

Paraiba tourmaline from Brazil 0.203ct loose (CuO: 0.9%, MnO: 2.6%) Sale price¥29,800

ブラジル産パライバトルマリン 0.455ct原石（CuO:0.9%、MnO:2.2%）

Brazilian Paraiba tourmaline 0.455ct raw stone (CuO: 0.9%, MnO: 2.2%) Sale price¥15,800

ブラジル産パライバトルマリン 0.448ct原石（CuO:2.7%、MnO:2.0%）

Brazilian Paraiba tourmaline 0.448ct raw stone (CuO:2.7%, MnO:2.0%) Sale price¥19,800

ブラジル産パライバトルマリン 0.156ct原石（CuO:2.5%、MnO:0.5%）

Brazilian Paraiba tourmaline 0.156ct raw stone (CuO:2.5%, MnO:0.5%) Sale price¥15,800

ブラジル産パライバトルマリン 0.054ctルース（CuO:1.2%、MnO:3.1%）

Paraiba tourmaline from Brazil 0.054ct loose (CuO:1.2%, MnO:3.1%) Sale price¥15,800

Paraiba tourmaline from Brazil 0.353ct loose (CuO:0.8%, Mn:3.4%) Sale price¥39,800

ブラジル産エルバイトトルマリン（バイカラー） 0.390ct原石（CuO:0.7%、MnO:3.0%）

Brazilian elbaite tourmaline (bicolor) 0.390ct rough stone (CuO: 0.7%, MnO: 3.0%) Sale price¥29,800

Tourmaline cat's eye 4.790ct loose Sale price¥6,980

Tourmaline cat's eye 4.590ct loose Sale price¥12,800

Yellow tourmaline 2.290ct loose Sale price¥8,800

ブラジル産パライバトルマリン 0.055ctルース（CuO:1.5%,MnO:3.2%）

Paraiba tourmaline from Brazil 0.055ct loose (CuO:1.5%,MnO:3.2%) Sale price¥39,800

ブラジル産パライバトルマリン 0.066ctルース（CuO:1.7%,Mn0:2.1%）

Paraiba tourmaline from Brazil 0.066ct loose (CuO:1.7%,Mn0:2.1%) Sale price¥29,800

ブラジル産パライバトルマリン 0.252ctルース（CuO:0.9%、MnO:2.0%）

Paraiba tourmaline from Brazil 0.252ct loose (CuO:0.9%, MnO:2.0%) Sale price¥29,800

【甲州貴石切子plusthree】トルマリンインクォーツ 2.484ct《コラボ》ルース《昴》ワッペン付

[Koshu precious stone Kiriko plusthree] Tourmaline in quartz 2.484ct《Collaboration》Ruth《Subaru》 Patch included 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 0.229ctルース（CuO:0.8%、MnO:2.2%）

Brazilian Paraiba tourmaline 0.229ct loose (CuO:0.8%, MnO:2.2%) Sale price¥39,800

Brazilian Paraiba tourmaline 181.342ct raw stone Sale price¥9,800

Paraiba tourmaline 233.409ct raw stone from Brazil Sale price¥12,800

Green tourmaline 0.305ct loose stone Sale price¥3,980

Pink tourmaline 0.915ct loose Sale price¥7,980

Pink tourmaline 0.506ct loose Sale price¥5,980

Pink tourmaline 0.553ct loose Sale price¥6,980

Pink tourmaline 1.011ct loose Sale price¥8,800

Pink tourmaline 0.734ct loose Sale price¥7,980

Bicolor tourmaline 1.440ct loose Sale price¥9,800

Bicolor tourmaline 1.704ct loose Sale price¥12,800

Sri Lankan tourmaline 4.860ct loose stone (cushion cut) Sale price¥12,800

Brazilian Pink Tourmaline 6.549ct Loose Stone (Elbaite Liddicoatite Tourmaline) Nikkeikan Sale price¥188,000

【甲州貴石切子plusthree】トルマリンインクォーツ 2.652ct《コラボ》ルースワッペン付

[Koshu Precious Stones Plusthree] Brazilian Tourmaline in Quartz 2.652ct Loose Stone Sale price¥18,800

ブラジル産パライバトルマリン（パーティカラー） 0.268ct原石（CuO:1.8%、MnO:0.7%）

Brazilian Paraiba tourmaline (parti color) 0.268ct rough stone (CuO: 1.8%, MnO: 0.7%) Sale price¥18,800

モザンビーク産パライバトルマリン 1.481ctルース（CuO:0.3%、MnO:4.3%）

Paraiba tourmaline from Mozambique 1.481ct loose (CuO:0.3%, MnO:4.3%) Sale price¥158,000

【サンジェ氏】バイカラートルマリン 0.880ctルース - カラッツSTORE

Brazilian bicolor tourmaline 0.880ct loose stone Sale price¥12,800

Brazilian Green Tourmaline 3.943ct Loose Stone Sale price¥39,800

Brazilian bicolor tourmaline 13.927ct loose stone Sale price¥198,000

Limited to 6 stones: 1 loose canary yellow tourmaline from Mozambique. Discounts available for multiple purchases. Sale price¥6,980

Brazilian bicolor tourmaline 0.572ct loose stone (rose cut) Sale price¥14,800

Brazilian Bicolor Tourmaline 0.901ct Loose Stone (Rose Cut) Sale price¥12,800

Brazilian bicolor tourmaline 1.032ct loose stone Sale price¥25,800

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.