A mineral occurring in rhombic prisms, generally yellowish and pellucid, also colorless, and of greenesh, bluish, or brownish shades. It sometimes occurs massive and opaque. It is a fluosilicate of alumina, and is used as a gem.
- A colorless, blue, yellow, brown, or pink aluminum silicate mineral, often found in association with granitic rocks and valued as a gemstone, especially in the brown and pink varieties.
- Any of various yellow gemstones, especially a yellow variety of sapphire or corundum.
- A light yellow variety of quartz.
- Either of two South American hummingbirds (Topaza pyra or T. pella) having colorful plumage.