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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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Paraiba tourmaline from Brazil 0.230ct loose (CuO:1.2%, MnO:3.3%)

Paraiba tourmaline from Brazil 0.230ct loose (CuO:1.2%, MnO:3.3%) Sale price¥29,800
ブラジル産パライバトルマリン 0.160ctルース（ CuO:0.9%、MnO:3.9%）

Paraiba tourmaline from Brazil 0.160ct loose (CuO:0.9%, MnO:3.9%) Sale price¥29,800
Paraiba tourmaline from Brazil 0.213ct loose (CuO: 0.8%, MnO: 3.8%)

Paraiba tourmaline from Brazil 0.213ct loose (CuO: 0.8%, MnO: 3.8%) Sale price¥25,800
Paraiba tourmaline from Brazil 0.244ct loose (CuO:1.0%, MnO:1.9%)

Paraiba tourmaline from Brazil 0.244ct loose (CuO:1.0%, MnO:1.9%) Sale price¥29,800
【KEN氏】トルマリン 0.360ctルース - カラッツSTORE

Tourmaline 0.360ct loose stone Sale price¥2,980
グリーントルマリンキャッツアイ 6.480ctルース

Green tourmaline cat's eye 6.480ct loose Sale price¥8,800
トルマリンキャッツアイ 4.790ctルース

Tourmaline cat's eye 4.790ct loose Sale price¥6,980
トルマリンキャッツアイ 4.590ctルース

Tourmaline cat's eye 4.590ct loose Sale price¥12,800
バイカラートルマリン 0.880ctルース

Bicolor tourmaline 0.880ct loose Sale price¥8,800
バイカラートルマリン 1.220ctルース

Bicolor tourmaline 1.220ct loose Sale price¥15,800
Pt950 バイカラーサファイア 0.398ct リング

[On sale at 10pm on August 16th] Pt950 Tanzanian Bicolor Sapphire 0.398ct Paraiba Tourmaline Ring Sale price¥128,000
290ctルース

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
グリーントルマリン 9.537ctルース

Green tourmaline 9.537ct loose Sale price¥98,000
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
ピンクトルマリンキャッツアイ 5.460ctルース

Pink tourmaline cat's eye 5.460ct loose Sale price¥8,800
バイカラートルマリン 6.40ctルース

Bicolor tourmaline 6.40ct loose Sale price¥7,980
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
ブラジル産パライバトルマリン 96.184ct原石

Brazilian Paraiba tourmaline 96.184ct raw stone Sale price¥8,800
【KEN氏】ピンクトルマリン 0.841ctルース

Pink tourmaline 0.841ct loose stone Sale price¥8,800
ブラジル産パライバトルマリン 181.342ct原石

Brazilian Paraiba tourmaline 181.342ct raw stone Sale price¥9,800
ブラジル産パライバトルマリン 233.409ct原石

Paraiba tourmaline 233.409ct raw stone from Brazil Sale price¥12,800
【KEN氏】グリーントルマリン 0.305ctルース - カラッツSTORE

Green tourmaline 0.305ct loose stone Sale price¥3,980
ピンクトルマリン 0.915ctルース

Pink tourmaline 0.915ct loose Sale price¥7,980
ピンクトルマリン 0.377ctルース

Pink tourmaline 0.377ct loose Sale price¥3,980
ピンクトルマリン 0.506ctルース

Pink tourmaline 0.506ct loose Sale price¥5,980
ピンクトルマリン 0.553ctルース

Pink tourmaline 0.553ct loose Sale price¥6,980
ピンクトルマリン 1.011ctルース

Pink tourmaline 1.011ct loose Sale price¥8,800
ピンクトルマリン 0.734ctルース

Pink tourmaline 0.734ct loose Sale price¥7,980
バイカラートルマリン 1.440ctルース

Bicolor tourmaline 1.440ct loose Sale price¥9,800
バイカラートルマリン 1.024ctルース

Bicolor tourmaline 1.704ct loose Sale price¥12,800
スリランカ産トルマリン 4.860ctルース

Sri Lankan tourmaline 4.860ct loose stone (cushion cut) Sale price¥12,800
ブラジル産パライバトルマリンインクォーツ 0.708ctルース

Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.708ct Loose Stone Sale price¥15,800
【KEN氏】ミントグリーントルマリン 0.541ctルース - カラッツSTORE

Brazilian green tourmaline 0.541ct loose stone Sale price¥4,980
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
《9石限定》ジェムガチャ『春色カラー』💎バイカラートルマリン1石 - カラッツSTORE

Only 1 left! Gem Gacha "Spring Colors" 💎 1 Bicolor Tourmaline (Multiple Purchase Discounts Available) Sale price¥6,980
{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

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の取り組みと社会貢献

業界発展のための後進育成や事業協力、宝石の国スリランカの子どもたちへの支援活動など、KARATZの取り組みについてご紹介いたします。

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.