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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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《Only a few left》 Brazilian Paraiba Tourmaline (Batalia) Gacha💎1.2mm 1 out of 10 stones contains Cu&Mn (CuO:2.1%, MnO:0.9%/CuO:1.6%, MnO:1.5%) 《Multiple purchase discounts available》

《Only a few left》 Brazilian Paraiba Tourmaline (Batalia) Gacha💎1.2mm 1 out of 10 stones contains Cu&Mn (CuO:2.1%, MnO:0.9%/CuO:1.6%, MnO:1.5%) 《Multiple purchase discounts available》 Sale price¥4,980
ブラジル産パライバトルマリン 0.215ctルース（CuO:1.1%、MnO:3.3%）

【5/21 22時販売】ブラジル産パライバトルマリン 0.215ctルース（CuO:1.1%、MnO:3.3%） Sale price¥55,800
グリーントルマリンキャッツアイ 5.210ctルース

[On sale from 10pm on 5/18] Brazilian Green Tourmaline Cat's Eye 5.210ct Loose Sale price¥25,800
【12529239掲載】バイカラートルマリン 4.554ctルース

[On sale from 10pm on 5/18] Brazilian bicolor tourmaline 4.554ct loose stone from Nikkei Sale price¥298,000
[On sale at 22:00 on 5/15] Brazilian bicolor tourmaline 7.445ct loose stone

[On sale at 22:00 on 5/15] Brazilian bicolor tourmaline 7.445ct loose stone Sale price¥69,800
バイカラートルマリンキャッツアイ 4.730ctルース

[On sale from 10pm on 5/14] Brazilian bicolor tourmaline cat's eye 9.5mm/4.730ct loose stone Sale price¥18,800
バイカラートルマリン 6.258ctルース（トリカラートルマリン）

[On sale from 10pm on 5/11] Brazilian bicolor tourmaline 6.258ct loose stone (tricolor tourmaline) Sale price¥148,000
バイカラートルマリンキャッツアイ 2.640ctルース

[On sale from 10pm on 5/9] Brazilian bicolor tourmaline cat's eye 2.640ct loose stone Sale price¥12,800
[On sale from 10pm on 5/9] Brazilian Green Tourmaline Cat's Eye 3.310ct Loose

[On sale from 10pm on 5/9] Brazilian Green Tourmaline Cat's Eye 3.310ct Loose Sale price¥5,980
ブラジル産パライバトルマリン 0.225ct原石（ CuO:2.1%、MnO:0.9%）

[On sale from 10pm on 5/9] Brazilian Paraiba Tourmaline 0.225ct rough stone (CuO: 2.1%, MnO: 0.9%) Sale price¥8,800
ブラジル産パライバトルマリン 0.184ct原石（CuO:1.5%、MnO:0.6%）

[On sale from 10pm on 5/1] Brazilian Paraiba tourmaline 0.184ct rough stone (CuO: 1.5%, MnO: 0.6%) Sale price¥12,800
ブラジル産パライバトルマリン 0.180ct原石（ CuO:1.8%、MnO:0.1%）

[On sale from 10pm on 5/1] Brazilian Paraiba Tourmaline 0.180ct rough stone (CuO: 1.8%, MnO: 0.1%) Sale price¥12,800
[On sale at 10pm on 4/28] Brazilian Paraiba Tourmaline in Quartz 3.678ct loose stone

[On sale at 10pm on 4/28] Brazilian Paraiba Tourmaline in Quartz 3.678ct loose stone Sale price¥9,800
ブラジル産バイカラートルマリン 12.842ctルース

[On sale from 10pm on 4/27] Brazilian bicolor tourmaline 12.842ct loose stone Sale price¥298,000
ナイジェリア産ピンクトルマリン 1.527ctルース

[On sale from 22:00 on 5/6] Nigerian pink tourmaline 1.527ct loose stone Sale price¥18,800
ピンクトルマリン 0.361ctルース

[On sale 5/3 at 22:00] Brazilian pink tourmaline 0.361ct loose stone Sale price¥9,800
カナリーイエロートルマリン 0.25ctルース

[On sale from 10pm on 5/3] Zambian Canary Yellow Tourmaline 0.25ct loose stone Sale price¥9,800
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 20 stones: Brazilian Paraiba Tourmaline (Batalha mine) 1 loose stone (multiple purchase discounts available)

Limited to 20 stones: Brazilian Paraiba Tourmaline (Batalha mine) 1 loose stone (multiple purchase discounts available) Sale price¥8,800
Limited to 15 sets: Two Nigerian tourmaline gemstones (October birthstone) Discounts available for multiple purchases

Limited to 15 sets: Two Nigerian tourmaline gemstones (October birthstone) Discounts available for multiple purchases Sale price¥1,580
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
Limited to 25 stones: Brazilian Paraiba Tourmaline (including bicolor, Batalha) rough stones, average size 0.1ct. Discounts for multiple purchases available.

Limited to 25 stones: Brazilian Paraiba Tourmaline (including bicolor, Batalha) rough stones, average size 0.1ct. Discounts for multiple purchases available. Sale price¥6,980
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
[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
《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

《9 stones only》Gem gacha "Spring colors"💎Bicolor tourmaline x 1《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💎トルマリン1石（ハートシェイプ）ルース 《複数購入割引有》

Gem Gacha💎Tourmaline 1 stone (heart shape) loose stone {Multiple purchase discount available} Sale price¥3,980
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
ブラジル産パライバトルマリン 0.240ctルース

Paraiba tourmaline from Brazil 4.1mm/0.240ct loose Sale price¥14,800
ブラジル産パライバトルマリン 0.254ctルース

Paraiba tourmaline from Brazil 0.254ct loose Sale price¥16,800
[On sale from 10pm on 4/20] Brazilian Paraiba Tourmaline 0.229ct loose stone (CuO: 0.6%, MnO: 1.0%)

[On sale from 10pm on 4/20] Brazilian Paraiba Tourmaline 0.229ct loose stone (CuO: 0.6%, MnO: 1.0%) Sale price¥35,800
【さくらシェイプ】ブラジル産グリーントルマリン6.7mm/ 1.057ctルース

[On sale from 10pm on 4/20] [Sakura Shape] Brazilian Green Tourmaline 6.7mm/1.057ct Loose Patch Sale price¥39,800
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%）

[On sale from 10pm on 4/19] 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 0.166ctルース（CuO:0.7%、MnO:3.6%）

[On sale from 10pm on 4/19] Brazilian Paraiba Tourmaline 0.166ct loose stone (CuO: 0.7%, MnO: 3.6%) Sale price¥22,800
【KEN氏】アフリカ産パーティカラートルマリン 1.121ctルース（トリカラー） - カラッツSTORE

[On sale from 10pm on 4/19] Parti-color tourmaline 1.121ct loose stone (tri-color) Sale price¥18,800
[On sale at 10pm on 4/18] Brazilian Paraiba Tourmaline in Quartz 2.864ct loose stone

[On sale at 10pm on 4/18] Brazilian Paraiba Tourmaline in Quartz 2.864ct loose stone Sale price¥9,800
[On sale at 22:00 on 4/18] Brazilian Paraiba Tourmaline in Quartz 2.801ct loose stone

[On sale at 22:00 on 4/18] Brazilian Paraiba Tourmaline in Quartz 2.801ct loose stone Sale price¥9,800
アフガニスタン産シーフォームトルマリン 0.426ctルース

[On sale from 22:00 on 5/6] Afghanistan seafoam tourmaline 0.426ct loose stone Sale price¥18,800
アフガニスタン産グリーントルマリン 0.259ctルース

[On sale at 10pm on 4/28] Afghanistan Green Tourmaline 4.1mm/0.259ct Loose Sale price¥12,800
ブラジル産グリーントルマリン 0.270ctルース

[On sale from 10pm on 5/6] Brazilian Green Tourmaline 4.1mm/0.270ct Loose Sale price¥9,800
シーフォームトルマリン 1.363ctルース

[On sale from 22:00 on 5/6] Afghanistan Seafoam Tourmaline 7.2mm/1.363ct Loose Stone Sale price¥59,800
アフガニスタン産シーフォームトルマリン 0.487ctルース

[On sale from 10pm on 4/23] Afghanistan Seafoam Tourmaline 5.1mm/0.487ct Loose Stone Sale price¥18,800
K18PG ブラジル産パライバトルマリン 0.49ct リング

[On sale from 10pm on 5/3] K18PG Brazilian Paraiba Tourmaline 0.49ct Paraiba Tourmaline Ring GIA Sale price¥198,000

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.

The fifth reprint has been decided and is now on sale at bookstores nationwide and online.

Written by KARATZ, book “Jewelry Illustrated Book”

The book provides explanations about over 300 types of gemstones, from new standard birthstones to rare stones that are hard to find, as well as a diary of our company representative, Mr. Koyama's, gemstone shopping experience in Thailand and Sri Lanka, and tips for photographing gemstones, allowing you to learn about the appeal of gemstones from various perspectives.

KARATZ・Five Commitments