Gemstones in India date back thousands of years There are several reasons why Indian gems are so inexpensive. For starters, there are large amounts of high-quality stones available for mining; which means there's no shortage of raw materials for processing.

The nine stones consist of diamond, pearl, coral, hessonite, blue sapphire, cat's eye, yellow sapphire, emerald, and ruby in its center, as it is associated with the Sun.

Blue is a very desirable hue and only 0.1% of natural diamonds have a natural blue hue, hence they rule the list of most valuable gemstones. The blue colour in diamonds is because of the traces of the Boron element. Blue diamonds were first discovered in India and considered as the elemental symbol of royalty.

Ruby is the July birthstone – and it's one of the most coveted of gems. Called the “King of Gems” since it gained status in Ancient India, today it can command the highest per-carat price of any colored stone.