Gemstones are categorized into two major categories; precious & semi precious stones. The range of precious stones comprises only four main kinds of gems; sapphire,emerald, ruby, and diamond. Except these all other types of gemstones come under semi-precious category. The price of any of these gemstones is determined by factors like innate beauty, size, abundance, popularity and the cut. Semi precious stones manufacturers, precious stones suppliers, and exporters are engaged in bringing forth a huge gamut of precious & semi precious stones.