A hard gem (8 on the Mohs scale) whose perfect cleavage makes it prone to chipping or cracking.
Colors
Colorless when pure; Brownish orange to yellow (precious topaz); Orange with pink undertones (imperial topaz, the most prized); Blue (rare in nature, usually from treatment)
Mohs hardness
8
Everyday wear
Wear with care
Found in
Brazil (largest producer), Pakistan, India, Sri Lanka
For much of history, all yellow gems were called topaz, and all topaz was thought to be yellow.
Pick by color, budget and how the piece will be worn. Harder, tougher stones suit rings worn every day; softer ones last longer as pendants or earrings.