Which of the minerals below show pleochroism?

aquamarine
bixbite
alexandrite
topaz
Pleochroism is an optical phenomenon in which a substance has different colors when observed at different angles, especially with polarized light. Alexandrite appears greenish in daylight where the full spectrum of visible light is present, and reddish in incandescent light which emits less green and blue spectrum.
Ninjai
0
Correct this question
1
Very interesting!
reach: rather globalgeologyminerals
Minerals quizGeology quiz
  You will play as

Answers by country

aquamarine
bixbite
alexandrite
topaz
answers
flagAustralia
16%
22%
55%
5%
18
flagGreece
16%
0%
55%
27%
18
flagGermany
16%
6%
38%
35%
113
flagPoland
23%
13%
36%
25%
2121
flagCanada
9%
27%
36%
27%
11
flagAustria
7%
21%
35%
35%
14
flagthe United States
22%
15%
33%
25%
72
flagIndia
28%
10%
30%
28%
66
flagPakistan
18%
9%
27%
45%
11
flagthe United Kingdom
26%
21%
23%
23%
38
flagthe Philippines
31%
18%
18%
31%
16