Materials

Above

light
transparent
brittle
grown
musical
woven
metallic
flowing
viscous
ductile
fluid
luminous
eroded

Below

heavy
opaque
dense
crushed
dull
tessellated

Neutral

natural
artificial
crystalline
grainy
compositional
hollow
sectional
fractured
porous
endothermic
exothermic
reinforced
symetrical
resistant
impure
absorbing
rusted