Used for variety of purposes, there is a wide spectrum of semi-precious stones in different shapes, sizes, color, brilliance and clarity. These stones are classified into different groups, species, and varieties. Semi precious stones when properly cut and polished are transformed into beautiful gems by the artisans and used in jewelry or other adornments. There are healing and decorative semi precious stones that also make excellent gifts. Know more about these stones, their composition, physical & chemical properties, their uses.