LARGE PLASTER CRYSTAL WITH A THICK CRYSTAL OF MORE THAN 2.5 CENTIMETERS. TOTALLY TRANSPARENT GLASS AND WITH A PERFECT FINISHING. IDEAL 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.
Gypsum crystallizes in prismatic habit, tabular and rhombic shaped crystals with beveled edges. It appears in crystals, sometimes large and arrowhead or spearhead.
