Name that's also a gemstone (4)
I believe the answer is:
opal
(Other definitions for opal that I've seen before include "Milky iridescent stone" , "Precious stone" , "Glassy gemstone" , "Rock" , "Type of gem" .)
I believe the answer is:
opal
(Other definitions for opal that I've seen before include "Milky iridescent stone" , "Precious stone" , "Glassy gemstone" , "Rock" , "Type of gem" .)