topaz

English Thesaurus

1. a light brown the color of topaz (noun.attribute)

hypernym	:	light brown,
definition	:	a brown that is light but unsaturated (noun.attribute)

2. a mineral (fluosilicate of aluminum) that occurs in crystals of various colors and is used as a gemstone (noun.substance)

hypernym	:	mineral,
definition	:	solid homogeneous inorganic substances occurring in nature having a definite chemical composition (noun.substance)

hypernym	:	transparent gem,
definition	:	a gemstone having the property of transmitting light without serious diffusion (noun.substance)

3. a yellow quartz (noun.substance)

hypernym	:	quartz,
definition	:	a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities (noun.substance)