Multiple choice

Which property is the least reliable for mineral identification?

  1. Luster

  2. Color

  3. Streak

  4. Hardness

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Color is the least reliable property because many minerals come in a variety of colors due to minor impurities, and different minerals can share the same color. Properties like hardness, streak, and luster are much more consistent and reliable for identification.