Gemo Stones

Gemo stones are used for personal adornment and ornamental purposes. A perfect gemo stone should be transparent, beautiful to look at in colour, durable, rare, costly and possess good lustre and high refractive index. Such stones are called precious stones. Those which are common and cheap and those lacking any of the above said qualities are treated as semi-precious stones.
Diamond, emerald, ruby, sapphire and opal are the important precious stones.T

he important semi-precious stones are topaz, aquamarine, spinel, garnet, tourmaline, peridot, zircon, chrysoberyl, quartz, feldspar,jade, lapis-lazuli, agate and carnelian.