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emerald

Emerald is the birthstone of May. It is a type of beryl, the same mineral as aquamarine, and is a green gemstone. It is also known as the stone that Cleopatra once loved, and many anecdotes remain. It is characterized by its brittle nature with many scratches and inclusions, so much so that there is a saying that ``There are fewer emeralds without scratches than people with no defects.''

Karatz GemMagazine
" Emerald "

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コロンビア産エメラルドキャッツアイ 0.078ctルース

Colombian emerald cat's eye 0.078ct loose Sale price¥8,800
コロンビア産エメラルドキャッツアイ 0.061ctルース

Colombian emerald cat's eye 0.061ct loose Sale price¥12,800
コロンビア産エメラルド3.2mm/0.102ctルース

Colombian emerald 10.940ct rough stone Sale price¥89,800
コロンビア産エメラルド3.2mm/0.102ctルース

Colombian emerald 8.90ct rough stone Sale price¥65,800
エメラルドキャッツアイ 0.417ctルース

Colombian emerald cat's eye 0.417ct loose Sale price¥59,800
エメラルド 3mm/0.126ct ルース

Colombian emerald 3mm/0.126ct loose Sale price¥32,800
エメラルド 0.295ctルース

Emerald 0.295ct loose Sale price¥19,800
エメラルド 0.208ctルース

Emerald 0.208ct loose Sale price¥15,800
エメラルド 15.219ctルース 日独鑑

Emerald 15.219ct loose Japanese-German book Sale price¥298,000
トラピッチェエメラルド 1.319ctルース

Trapiche emerald 1.319ct loose Sale price¥12,800
【12528228掲載】トラピッチェエメラルド 1.284ctルース

Trapiche emerald 1.284ct loose Sale price¥15,800
コロンビア産ノンオイルエメラルド 0.535ctルース

Colombian oil-free emerald 0.535ct loose Japanese-German edition Sale price¥248,000
Russian oil-free emerald 0.570ct loose with GIA

Russian oil-free emerald 0.570ct loose with GIA Sale price¥258,000
【11522807掲載】エメラルド 0.104ctルース

Emerald 0.104ct loose (sugar loaf) Sale price¥16,800
Sold out コロンビア産トラピッチェエメラルド（逆トラピッチェ）

Colombian trapiche emerald (reverse trapiche)

Sold out 【宝石商の道具】冷却ヒビ入れ染色クォーツ・天然エメラルド見分け2点セット - KARATZ STORE｜カラッツSTORE

[Jeweler's Tools] Cooling Cracked Dyed Quartz/Natural Emerald Identification 2-piece Set (Discount available for multiple purchases)

Sold out 【5月誕生石】コロンビア産エメラルド原石1石（平均1.1ct） - カラッツSTORE

[May birthstone] 1 rough Colombian emerald stone (average 1.1 ct)《Multiple purchase discounts available》

Sold out 《限定7点》ブラジル産エメラルドキャッツアイ1石（平均1.01ct）《複数購入割引有》

1 Brazilian emerald cat's eye stone (average 1.01ct)《Multiple purchase discounts available》

Sold out Limited to 8 stones Tsavorite + Emerald Loose 2 stone set Multiple purchase discounts available Multiple purchase discounts available

Limited to 8 stones Tsavorite + Emerald Loose 2 stone set Multiple purchase discounts available Multiple purchase discounts available
Sold out Colombian emerald + Brazilian alexandrite (Hemachita mine) 2 stone set《Multiple purchase discount available》

Colombian emerald + Brazilian alexandrite (Hemachita mine) 2 stone set《Multiple purchase discount available》

Sold out Colombian mint color emerald 1 loose stone {Multiple purchase discount available}

Colombian mint color emerald 1 loose stone {Multiple purchase discount available}
Sold out コロンビア産エメラルド 1.400ct原石

Colombian emerald 1.40ct rough stone

Sold out Limited to 4 sets: Brazilian emerald (sugarloaf cut) & Zambian emerald 2 stone set (multiple purchase discounts available)

Limited to 4 sets: Brazilian emerald (sugarloaf cut) & Zambian emerald 2 stone set (multiple purchase discounts available)
Sold out [Sales end on January 8th 🎍] 2024 New Year lucky bag 🎍《Confirmed rare stone lucky bag with non-oil emerald GIA》 Worth 200,000 yen (plus 2 rare stones)

[Sales end on January 8th 🎍] 2024 New Year lucky bag 🎍《Confirmed rare stone lucky bag with non-oil emerald GIA》 Worth 200,000 yen (plus 2 rare stones)

Sold out K18 Colombian oil-free emerald 0.35ct ring GIA

K18 Colombian oil-free emerald 0.35ct ring GIA
Sold out エメラルドインクォーツ 3.642ctルース

【11/21 22時販売】ブラジル産エメラルドインクォーツ 3.642ctルース
Sold out エメラルドインクォーツ 2.181ルース

[On sale 11/6 at 22:00] Brazilian emerald in quartz 2.181ct loose stone
Sold out K18YGノンオイルエメラルドキャッツアイ0.26ctリング GIA

K18YG non-oil emerald cat's eye 0.26ct ring GIA
Sold out コロンビア産パイライト・雲母インエメラルド 0.517ctルース

Colombian pyrite-mica emerald 0.517ct loose stone
Sold out コロンビア産ミントカラーエメラルド 0.141ctルース

Colombian mint color emerald 0.141ct loose stone
Sold out コロンビア産雲母インエメラルド 3.9mm/0.278ctルース

Colombian Mica in Emerald 3.9mm/0.278ct Loose Stone
Sold out コロンビア産ミントカラーエメラルド 0.182ctルース

Colombian mint color emerald 0.182ct loose stone
Sold out コロンビア産ミントカラーエメラルド 0.191ctルース

Colombian mint color emerald 0.191ct loose stone

Sold out コロンビア産雲母インエメラルド 0.454ctルース

Colombian Mica in Emerald 4.9mm/0.454ct Loose Stone
Sold out コロンビア産エメラルド 0.433ct原石

Colombian emerald 0.433ct rough stone
Sold out コロンビア産ミントカラーエメラルド 0.252ctルース

Colombian mint color emerald 0.252ct loose stone
Sold out コロンビア産ミントカラーエメラルド 0.429ctルース

Colombian mint color emerald 0.429ct loose stone
Sold out コロンビア産ミントカラーエメラルド 0.197ctルース

Colombian mint color emerald 0.197ct loose stone
Sold out コロンビア産エメラルド 0.130ct原石

Colombian emerald 0.130ct rough stone
Sold out コロンビア産エメラルド 0.127ct原石

Colombian emerald 0.127ct rough stone
Sold out コロンビア産エメラルド 0.144ct原石

Colombian emerald 0.144ct rough stone
Sold out コロンビア産パイライトインエメラルド 0.816ctルース

Colombian pyrite emerald 0.816ct loose stone
Sold out コロンビア産エメラルド 0.139ct原石

Colombian emerald rough stone 0.139ct
Sold out コロンビア産エメラルド 0.164ct原石

Colombian emerald 0.164ct rough stone
Sold out コロンビア産エメラルド 0.197ct原石

Colombian emerald 0.197ct rough stone
Sold out コロンビア産エメラルド 1.349ctルース

Colombian emerald 1.349ct loose stone
Sold out コロンビア産エメラルド 0.505ct原石

Colombian emerald 0.505ct rough stone

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