Emily Dickinson Lexicon
Definition for MOON'STONE
MOON'STONE, n.
A variety of adularia, of a white color, or a yellowish or greenish white, somewhat iridescent, found in blunt amorphous masses, or crystalized in truncated rhomboidal prisms, or in rectangular tables, or in hexahedral prisms beveled at both ends. The surface is often sulcated. Kirwan.
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