Pearl stone is found in the Persian Gulf / “Oman” / “Qatar” / “India” and “The Emirates”,

It is characterized by the following physical and chemical properties:

Physical properties

• Renal form
• The group is carbonate membership
  
• The scratch is white
• Hardness 3
• Color is white / cream / black / blue / yellow / green / pink
• dark
• The sparkle is pearly

Chemical properties

• Refractive index 1.55 / 1.68
• Density 2.7
• Cubic rhombic crystal system
• The chemical formula is calcium carbonate