Real-Life Weirdness

[sjard]

Originally Posted by William

...and weirdly, they're probably metabolizing the iron (garnet is deep red due to iron content) in some kind of chemosynthetic process.

Which always made me wonder what causes the more valuable ones to be mistaken for emeralds due to the green color? My family has several very pretty green garnet broaches that have been handed down for some time. As a side note, Garnets apparently come in every color except blue.