Definition of quartz
Nouns
colorless glass made of almost pure silica
- Synonyms:
- crystal, lechatelierite, quartz glass, vitreous silica
- Type of:
-
natural glass
magma of any composition that cooled very rapidly
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
- Types:
- show 18 types...
- hide 18 types...
-
quartz crystal
a thin plate or small rod of quartz cut along certain lines and ground so that it can produce an electric signal at a constant frequency; used in crystal oscillators
-
rock crystal, transparent quartz
a clear quartz used in making electronic and optical equipment
-
rhinestone
an imitation diamond made from rock crystal or glass or paste
-
cairngorm, smoky quartz
a smoky yellow or brown quartz
-
amethyst
a transparent purple variety of quartz; used as a gemstone
-
calcedony, chalcedony
a milky or greyish translucent to transparent quartz
-
agate
an impure form of quartz consisting of banded chalcedony; used as a gemstone and for making mortars and pestles
-
bloodstone, heliotrope
green chalcedony with red spots that resemble blood
-
carnelian, cornelian
a translucent red or orange variety of chalcedony
-
chrysoprase
a green variety of chalcedony valued as a gemstone
-
onyx
a chalcedony with alternating black and white bands; used in making cameos
-
plasma
a green slightly translucent variety of chalcedony used as a gemstone
-
sard, sardine, sardius
a deep orange-red variety of chalcedony
-
citrine
semiprecious yellow quartz resembling topaz
-
rose quartz
a translucent rose-red variety of quartz used for ornaments
-
aventurine, sunstone
a translucent quartz spangled with bits of mica or other minerals
-
goldstone
aventurine spangled densely with fine gold-colored particles
-
common topaz, false topaz, topaz
a yellow quartz
- Type of:
-
mineral
solid homogeneous inorganic substances occurring in nature having a definite chemical composition
Vocabulary Lists for quartz
- acicular
- adamantine
- albite
- amalgam
- amethyst