Skip to content

May birthstone

The birthstone for May is emerald / jade .

Emerald is a type of beryl, the same mineral as aquamarine, and is the name given to beryl, which contains chromium and has a green color. One of the characteristics is that many of them have scratches and inclusions inside. The most famous and high-quality production area is Colombia. The emerald cut is said to have originated from Colombian emeralds.

Jade is also a gemstone with an impressive green color, but it actually comes in a wide variety of colors, including purple, orange, and white. It is also famous for being mined in Japan, mainly in Niigata and Toyama prefectures, and has been selected as Japan's national stone. Highly transparent green jade called ``Roukan'' is the most valuable.

Karatz GemMagazine
" List of May birthstones and birthstones "

Sort by

Sold out エチオピア産ノンオイルエメラルド 0.470ctルース
Sold out エチオピア産ノンオイルエメラルド 0.310ctルース
Sold out エチオピア産ノンオイルエメラルド 0.340ctルース
Sold out エチオピア産ノンオイルエメラルド 0.230ctルース
Sold out エチオピア産ノンオイルエメラルド 0.290ctルース
Sold out エメラルド 3.0mm/0.072ctルース
Sold out エメラルド 3.0mm/ 0.106ctルース
Sold out コロンビア産エメラルドキャッツアイ 0.079ctルース
Sold out コロンビア産エメラルドキャッツアイ 0.061ctルース
Sold out 【12530869掲載】コロンビア産エメラルドキャッツアイ 0.041ctルース
Sold out 【12530801掲載】エメラルドキャッツアイ 0.101ctルース
Sold out コロンビア産エメラルド 4.210ct原石
Sold out コロンビア産エメラルド 1.400ct原石
Sold out エメラルド 0.690ctルース(シュガーローフカット)
Sold out エメラルド 0.905ctルース
Sold out エメラルド 0.110ctルース
Sold out エメラルド 3.890ctルース(バイカラーエメラルド)
Sold out エメラルド 0.123ctルース 日独鑑
Sold out エメラルド 0.340ctルース 日独鑑
Sold out エメラルド 0.219ctルース 日独鑑
Sold out エメラルド 0.212ctルース 日独鑑
Sold out コロンビア産エメラルド 3.0mm/0.082ctルース
Sold out エメラルド 2.9mmルース
Sold out 【12530151掲載】エメラルド 0.167ctルース
Sold out エメラルド3.0mm/0.113ctルース
Sold out コロンビア産エメラルド3.2mm/0.102ctルース
Sold out エメラルド 3.2mm/0.097ctルース
Sold out 翡翠(ヒスイ) 2.161ctルース
Sold out Jade (Jade) 0.437ct Ruth Japanese-German Dictionary
Sold out エメラルド 0.214ctルース
Sold out エメラルド 0.179ctルース
Sold out エメラルド 0.208ctルース
Sold out エメラルド 0.191ctルース
Sold out エメラルド 0.102ctルース
Sold out エメラルド 0.117ctルース
Sold out エメラルド 0.153ctルース
Sold out エメラルドキャッツアイ 0.550ctルース
Sold out エメラルドキャッツアイ 0.560ctルース
Sold out エメラルド 3.8mm/0.210ctルース
Sold out エメラルド3.7mmルース
Sold out Colombian trapiche emerald 1.819ct loose
Sold out Colombian trapiche emerald 1.813ct loose
Sold out 【12528227掲載】トラピッチェエメラルド 1.277ctルース
Sold out K18血赤珊瑚0.18ct ・エメラルドペンダント(ネックレス) - カラッツSTORE
Sold out K18エメラルド0.03ct・ダイヤモンド イヤーカフ - カラッツSTORE
Sold out コロンビア産ノンオイルエメラルド 0.410ctルース GIA
Sold out 【12527532掲載】トラピッチェエメラルド 0.524ctルース
Sold out トラピッチェエメラルド 0.413ctルース

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.