Ruby is one of the red varieties of the mineral corundum. Its name originated from "Rubens," meaning "red." In modern times, it is also called Red Sapphire. Kyanite crystal is a potent healing and communication stone and is an excellent choice for most people. The word kyanite, which comes from the Greek word kyanos, which means blue, is a mineral considered a semi-precious gemstone.
It is a member of the Triclinic crystal system, and it can be found in many different colors. The word kyanite was given to the mineral by Friedrich W. Hermann in 1812. This mineral is a talc-like mineral that is a silicate of aluminum and magnesium. It is a vitreous mineral with a hardness of 5.5 to 6.5 on the Mohs hardness scale.