Ruby is one of the hardest core materials that you can find on earth. They are mostly found in different shades of red, including bright red and brownish as well. Being a variety which belongs to the Corundum mineral class, it is found in Tanzania, Sri Lanka, and Thailand. Ruby is also known as the red corundum, where all the other colors which are crystallized from the hexagonal system are are known as sapphires. 

And when you talk about the rubies, only red color comes to mind and this is the reason why the blood red color is known to be the most famous variant and has much more value than all others. Ruby is one of the most precious and classy gemstones that you can find, and this is the reason why it is also known as Ratnaraj in Sanskrit, which means the king of pearls. This also cements the fact that it truly is an elite gemstone. The reason behind this is that it has a very continuous texture and a color which attracts everyone. Due to its deep color and marvelous looks, it attracts everyone. At the same time, it is a pretty hard stone which means it is durable as well.