SPECTACULAR PLASTER IN THE SHAPE OF AN ARROW HEAD FROM MONTALBAN IN TERUEL. FULLY TRANSPARENT DOUBLE AND CROSSED GLASSES WITH A LIGHT YELLOW TONATION AND WATER INSIDE.
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.
