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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 "

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ブラジル産パーティカラーパライバトルマリン 0.26ctルース GIA

Brazilian particolor Paraiba tourmaline 0.26ct loose GIA Sale price¥598,000
非加熱ブラジル産パライバトルマリン 0.050ctルース GIA

Unheated Paraiba tourmaline from Brazil 0.050ct loose GIA (color change Paraiba tourmaline) Sale price¥148,000
ブラジル産パライバトルマリン 0.226ctルース（CuO:0.7%、MnO:2.5%）

Brazilian Paraiba tourmaline 0.226ct loose (CuO:0.7%, MnO:2.5%) Sale price¥39,800
バイカラートルマリン 0.591ctルース（ローズカット）

Bicolor tourmaline 0.591ct loose (rose cut) Sale price¥8,980
バイカラートルマリン 0.435ctルース（ローズカット）

Bicolor tourmaline 0.435ct loose (rose cut) Sale price¥5,980
【サンジェ氏】ピンクトルマリン 0.482ctルース

Pink tourmaline 0.482ct loose stone Sale price¥5,980
バイカラートルマリン 0.258ctルース

[On Sale at 10 PM on September 22nd] Brazilian Bicolor Tourmaline 0.258ct Loose Stone Sale price¥8,800
非加熱ブラジル産パライバトルマリン 0.039ctルース

[On Sale at 10 PM on September 22nd] Unheated Brazilian Paraiba Tourmaline 0.039ct Loose Stone (CuO: 2.0%, MnO: 2.3%) Sale price¥59,800
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%）

Paraiba tourmaline from Brazil 0.205ct loose (CuO:0.8%, MnO:3.1%) Sale price¥39,800
ブラジル産パライバトルマリン 0.167ctルース（CuO:1.6%、MnO:3.0%）

Paraiba tourmaline from Brazil 0.167ct loose (CuO:1.6%, MnO:3.0%) Sale price¥29,800
ブラジル産パライバトルマリン 0.086ctルース（CuO:1.5%、MnO:2.3%）

Paraiba tourmaline from Brazil 0.086ct loose (CuO:1.5%, MnO:2.3%) Sale price¥18,800
ブラジル産パライバトルマリン 0.226ctルース（CuO:0.7%、MnO:3.6%）

Paraiba tourmaline from Brazil 0.226ct loose (CuO:0.7%, MnO:3.6%) Sale price¥39,800
ブラジル産パライバトルマリン 0.204ctルース

Paraiba tourmaline from Brazil 0.204ct loose Sale price¥29,800
ブラジル産パライバトルマリン 0.239ctルース

Paraiba tourmaline from Brazil 0.239ct loose Sale price¥45,800
ブラジル産パライバトルマリン 0.232ctルース

Paraiba tourmaline from Brazil 0.232ct loose Sale price¥45,800
ブラジル産パライバトルマリン 0.240ctルース（CuO:0.7%、MnO:3.8%）

Paraiba tourmaline from Brazil 0.240ct loose (CuO:0.7%, MnO:3.8%) Sale price¥45,800
バイカラートルマリン 1.248ctルース

Bicolor tourmaline 1.248ct loose Sale price¥6,980
バイカラートルマリン 1.097ctルース

Bicolor tourmaline 1.097ct loose Sale price¥5,980
ブラジル産パライバトルマリン 0.134ctルース（CuO:0.8%、MnO:2.3%）

Paraiba tourmaline from Brazil 0.134ct loose (CuO:0.8%, MnO:2.3%) Sale price¥25,800
ウォーターメロントルマリン 44.201ctルース 日独鑑

Watermelon tourmaline 44.201ct Ruth Japanese-German book Sale price¥398,000
バイカラートルマリン 3.277ctルース

Bicolor tourmaline 3.277ct loose Sale price¥9,800
パーティカラートルマリン 32.207ctルース（トリカラートルマリン）

Particolor tourmaline 32.207ct loose (tricolor tourmaline) Sale price¥398,000
ピンクトルマリン 0.391ctルース

Pink tourmaline 0.391ct loose Sale price¥4,980
[On sale at 10 PM on September 13th] Limited to 8 stones: Mini Kite Cut Loose Stone (Includes 2 Paraiba Tourmalines, Green Beryl, Ruby, Peridot, etc.) [Multiple purchase discounts available]

[On sale at 10 PM on September 13th] Limited to 8 stones: Mini Kite Cut Loose Stone (Includes 2 Paraiba Tourmalines, Green Beryl, Ruby, Peridot, etc.) [Multiple purchase discounts available] Sale price¥4,980
ブラジル産インディゴライトトルマリン 4.0mm/0.240ctルース 鑑別書

[On Sale at 10 PM on September 16th] Brazilian Indigolite Tourmaline 4.0mm/0.240ct Loose Stone with Certificate of Authenticity Sale price¥29,800
ブラジル産インディゴライトトルマリン 0.715ctルース

[Sold at 10 PM on September 13th] Brazilian Indigolite Tourmaline 0.715ct Loose Stone with Certificate of Authenticity Sale price¥45,800
モザンビーク産パライバトルマリン 0.154ctルース

[On Sale at 10 PM on September 13th] Mozambique Paraiba Tourmaline 0.154ct Loose Stone Sale price¥19,800
ブラジル産パライバトルマリン 1.649ctルース

[Posted 12529980] Paraiba tourmaline from Brazil 1.649ct loose Sale price¥18,800
ブラジル産パライバトルマリンインクォーツ 4.070ctルース

Brazilian Paraiba tourmaline in quartz 4.070ct loose Sale price¥12,800
パーティカラートルマリン 24.147ctルース

Particolor tourmaline 24.147ct loose Sale price¥49,800
1 stone of Brazilian blue tourmaline (3 x 4 mm pear shape/oval cut/3 x 5 mm pear shape/4 x 5 mm oval cut)《Discount available for multiple purchases》

1 stone of Brazilian blue tourmaline (3 x 4 mm pear shape/oval cut/3 x 5 mm pear shape/4 x 5 mm oval cut)《Discount available for multiple purchases》 Sale priceFrom ¥2,980
[Limited to 24 stones] Tourmaline Gacha💎Indigolite tourmaline, clover cut, and other single loose stones {Multiple purchase discounts available}

[Limited to 24 stones] Tourmaline Gacha💎Indigolite tourmaline, clover cut, and other single loose stones {Multiple purchase discounts available} Sale price¥2,580
宝石ガチャ💎ハートシェイプのトルマリン1石💎4mm《複数購入割引有》

Gem Gacha💎Heart-shaped tourmaline 1 stone💎4mm《Multiple purchase discount available》 Sale price¥2,980
宝石ガチャ💎プリンセスカットのトルマリン1石💎 3mm《複数購入割引有》

Gem Gacha💎Princess cut tourmaline 1 stone💎 3mm《Multiple purchase discount available》 Sale price¥2,980
{For beginners} Gem gacha💎 1 loose gemstone (Chrome tourmaline, Mahenge spinel, etc.) cut by Sri Lankan craftsman Sanjay {Multiple purchase discounts available}

{For beginners} Gem gacha💎 1 loose gemstone (Chrome tourmaline, Mahenge spinel, etc.) cut by Sri Lankan craftsman Sanjay {Multiple purchase discounts available} Sale price¥3,980
[Option] Paraiba Tourmaline component analysis sorting issuance fee

[Option] Paraiba Tourmaline component analysis sorting issuance fee Sale price¥5,000
宝石ガチャ💎クッションカットのトルマリン1石💎 4mm《複数購入割引有》

Gem Gacha💎1 cushion cut tourmaline stone💎 4mm《Multiple purchase discount available》 Sale price¥2,980

Additional charge: K18WG (base metal) + 10,000 yen Sale price¥18,800
《Limited to 7 stones》1 stone tourmaline in quartz from Sri Lanka loose (8-9mm, octagonal cut)《Multiple purchase discount available》

《Limited to 7 stones》1 stone tourmaline in quartz from Sri Lanka loose (8-9mm, octagonal cut)《Multiple purchase discount available》 Sale price¥3,980
[Option] Paraiba tourmaline analysis report attached identification certificate issuance fee

[Option] Paraiba tourmaline analysis report attached identification certificate issuance fee Sale price¥15,000
ブラジル産パライバトルマリンリング・ハーフエタニティリングセット（1.2mm）

Brazilian Paraiba Tourmaline Ring and Half Eternity Ring Set (1.2mm) Sale price¥188,000
モザンビーク産パライバトルマリン 3.5mm/0.172ctルース

[On Sale at 10 PM on August 31st] Paraiba Tourmaline from Mozambique, 3.5mm/0.172ct Loose Stone Sale price¥15,800
モザンビーク産パライバトルマリン 3.2mm/0.119ctルース

[On Sale at 10 PM on September 3rd] Paraiba Tourmaline from Mozambique, 3.2mm/0.119ct Loose Stone Sale price¥9,800
ブラジル産ピンクトルマリン 0.234ctルース

[On sale at 10pm on September 4th] Brazilian Pink Tourmaline 0.234ct Loose Stone Sale price¥8,800
コンゴ産ピンクトルマリン 0.825ctルース

[On Sale at 10 PM on August 28th] Congo Pink Tourmaline 6.0mm/0.825ct Loose Stone Sale price¥29,800
コンゴ産ピンクトルマリン 0.798ctルース

[On Sale at 10 PM on September 5th] Congo Pink Tourmaline 5.9mm/0.798ct Loose Stone Sale price¥25,800
コンゴ産ピンクトルマリン 5.0mm/0.463ctルース

[On Sale at 10 PM on September 1st] Congo Pink Tourmaline 5.0mm/0.463ct Loose Stone Sale price¥24,800
ブラジル産ミントカラートルマリン 0.145ctルース

[On Sale at 10 PM on August 28th] Brazilian Mint Color Tourmaline 0.145ct Loose Stone Sale price¥8,800

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.