Gemstone industry has the highest growth rate witnessed in the history because they are rare, can not be counterfeited, portable exchangeable and most importantly imperishable. Therefore they are traded with a narrow spread meaning with the smallest difference between buy and sell price. They are therefore the ultimate asset, luxury and a form of money.
Gems are used in jewely and ornaments that have been adorning men and women for ages. They never go out of fashion only trends change, designs change but the base remains the same. These are the factors responsible for amazing growth of these industries.