单词	demantoid
释义	demantoid /dɪˈmantɔɪd / noun [mass noun] A lustrous green variety of andradite (garnet).The main uses of garnets are for abrasives and grinding materials; they also provide semi-precious gemstones such as rhodolite, demantoid, and grossular.... The dragonflies' backs are composed of graduated black opals and the heads are of pink opals with demantoid garnet eyes. The third major find in recent years is green andradite, some of which may be considered demantoid. Origin Late 19th century: from German, from Demant 'diamond'.
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