英文關鍵字
beautiful
bright
calcite
chalcopyrite
chemistry
clear
closeup
crystal
crystalline
crystals
detail
encrustations
galena
gem
gems
gemstone
geologist
geology
iron
jewel
jewelry
macro
mine
mineral
mineralogy
mining
natural
nature
ore
precious
quartz
raw
rock
science
semiprecious
shining
shiny
sparkly
specimen
sphalerite
stone
structure
sulphide
white