英文關鍵字
tourmaline
mineral
gem
crystal
treasure
stone
blue
transparent
specimen
rock
mineralogy
mine
hydrothermal
glassy
pegmatite
geology
indicolite
crystalline
glass
afghanistan
asia
sample
aggregate
elbaite
gemmy
matrix
cluster
gemstone
jewel
ore
macro
precious
facet
pore
geological
rough
uncut
natural
background
turquoise
jewellery
shine
object
luxury
gemology
green
value
esoteric