Ruby and sapphire stones have a similar biochemical structure and equivalent mineral structure. Ruby stone is a crystal. This crystal is ranked second among the most expensive stones due to its rarity in nature and the excellent light it scatters into the environment. It is known as the "Lord of the Precious Stones" by many civilizations. Ruby stone is a stone that has a glassy and shining appearance. The chemical group of ruby ​​and sapphire stone hardness level is 9. This stone is a translucent, translucent, and opaque stone. The colors of this stone, which is in red and blue tones, appear in brown, red, and purple tones.