alloy
arrangement
assay
atom
atomic weight
basic material
blue
chemical
chemical element
chemistry
digital
element
elemental
fine
futuristic
gadolinium
gd
graphic
high purity
highly pure
icon
industrial
isolated
lanthanide
lump
mendeleev
metallic
mineral resources
mining
modern
period
periodic system
periodic table
piece
pure
purity
rare earth
rare earth element
rare earth mineral
raw material
representation
resource
school
science
scientific
symbol
system
very pure
white background