出典:Wiktionary
出典:『Wiktionary』 (2026/01/28 00:12 UTC 版)
From Ancient Greek χρυσός (khrusós, “gold”) and πράσινον (prásinon, “green”).
出典:Wikipedia
出典:『Wikipedia』 (2011/06/14 12:20 UTC 版)
Chrysoprase, chrysophrase or chrysoprasus is a gemstone variety of chalcedony (a cryptocrystalline form of silica) that contains small quantities of nickel. Its color is normally apple-green, but varies to deep green. The darker varieties of chrysoprase are also referred to as prase. (However, the term prase is also used to describe chlorite-included quartz, and to a certain extent is a color-descriptor, rather than a rigorously defined mineral variety.)