artifact
attestation
bedrock
carat
carbon
certification
certify
clarity
clear
crystal
diamond
diamond dealer
diamond mine
diamond trade
discovery
dob
exploitation
fortune
gem
gemstone
geology
gravel
investment
kimberlite
luxury
mine
mineral
mineral resources
mineralogy
mining
natural
natural resource
octahedral
octahedron
parent rock
precious
raw
raw material
real value
rich
rock
rough
south africa
specimen
stone
treasure
uncut
unpolished
unprocessed
wealth