POLYCHROM = Multicolored .
CHALCEDONY FLINT
Beautiful, large RAW STONE of these multicolored FIRESTONES - English CHERT or FLINTSTONE.
Extremely HARD with razor-sharp breaking edges.
This material is often sold as jasper - but this is not quite correct.
Found in ANTSIRABE in Madagascar
Wonderful material for sanding and the hardness makes it easy to create great polishes.
Weight: 4.5 KILOGRAM !
Dimensions: 27 x18 x 11 cm