Quartz
Of mineral.
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.
This concept's ID is @1~74193
Transparent Gem
- chalcedony
A milky or greyish translucent to transparent quartz.
- sunstone
A translucent quartz spangled with bits of mica or other minerals.
- amethyst
A transparent purple variety of quartz; used as a gemstone.
- citrine
Semiprecious yellow quartz resembling topaz.
Also contains
- silica
A white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's...
- rock crystal
A clear quartz used in making electronic and optical equipment.
- silicon
A tetravalent nonmetallic element; next to oxygen it is the most abundant element in the...
- quartz crystal
A thin plate or small rod of quartz cut along certain lines and ground so that it...
- cairngorm
A smoky yellow or brown quartz.
- topaz
A yellow quartz.
- rose quartz
A translucent rose-red variety of quartz used for ornaments.