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Product

Rock
ColorVaries depending on the minerals present, can be black, white, gray, red, brown, green, etc.
TextureCan be smooth, rough, bumpy, porous, or glassy
ShapeIrregular or angular
SizeRanges from pebble-sized to boulder-sized
HardnessCan range from very soft (e.g. talc) to very hard (e.g. diamond)
DensityTypically ranges from 2.5 to 3.3 g/cm3
CompositionMade up of one or more minerals, organic materials, or other substances
WeightCan vary widely depending on size and composition