SPECTACULAR PIECE OF TOTALLY TRANSPARENT PLASTER CRYSTALS WITH ARROW POINT SHAPE. THE WHOLE MATRIX FILLED WITH TOTALLY TRANSPARENT CRYSTALS. PIECE FOR COLLECTORS.
Gypsum is a mineral composed of calcium sulfate.
It is a sedimentary rock of chemical origin. It is very common and can form sedimentary rocks.
The gypsum crystallizes into crystals with a prismatic, tabular shape and rhombic shape with beveled edges. It occurs in crystals, sometimes large and arrowhead or spearhead.
