Gemstone are characterized in terms of refractive index, luster, specific gravity, dispersion hardness, shapes, cuts, color, UV-florescence, cleavage and fracture etc. They may exhibit double refraction. Gems may have luminescence and a distinctive absorption spectrum. The presence of Minor flaws or Material within a stone may be as inclusions. We at Ananya Gems Lab test the gems thoroughly, based on the abobe parameters and issue a printed-copy of Gems Identification report or Gems Testing Cerificate. The Gems Identification report contains all the specifications and parameter values. Gems are generally classfied into two types, first Precious Gemstone and second SemiPrecious Gemstone.

A precious gemstone is a valuable and rare gemstone, such as a diamond or a sapphire or emeralds or a ruby, that is used for making jewelry or astrological purposes or spiritual purposes. The can take six most sought-after precious gemstones are diamonds, sapphires, emeralds, rubies, oriental catseye and Black Opal.

There are some rare precious gemstone in demand like alexandrites, Tanzanites, Taaffeites, Grandidierites, Musgravite etc.

semi-precious gemstone are medium ranged stones—such as the amethyst, the topaz, the pearl, the red coral, the tourmaline, the aquamarine, the chrysoprase, the peridot, the opal, the zircon, and the jade etc. that are used in astrological and spiritual purposes. semiprecious gems are widly used in ornaments / jwellery also.