エメラルド

エメラルドは、ベリルの一種で、強い緑を帯びた宝石である。5月の誕生石である。-[[wikipedia.jp>]]

Emerald is a variety of the mineral beryl, colored green by trace amounts of chromium and sometimes iron. It is highly prized as a gemstone and ounce for ounce is the most valuable gemstone in the world, often made more so by inclusions. Beryl has a hardness of 8 on the 10-point Mohs scale of hardness.-wikipedia.en

:オブジェ
:自然物