background
baryte
bizarre
cluster
concentration
concentration of minerals
crystal aggregate
crystallization
earthy
fracture
full frame
gemology
gemstone
grown together
hardness
inorganic
irregular
irregular shapes
marcasite
massive
matrix
mineral aggregate
mineral rock
mineral stone
mineralogy
minerals
mixed
natural pattern
natural stone
nature pattern
pirite
pyrite
raw
stone
structure
surface
texture
unpolished
white iron