There have been a lot of superstitions on semi-precious stones which have existed back in the early times and up to now, there are still a lot of people who believe in their healing powers. Many people swear that these stones have a lot of hidden powers that they could bestow to the individual wearing them. These powers would include the ability to heal various illnesses and diseases of the body as well as to serve as protection from danger and harm.

A lot of modern cultures and communities today believe that red rubies could remove evil thoughts as well as stress, while opals could heal a myriad of different internal sicknesses and diseases. There are also some semi-precious stones that when in the presence of poison could change their appearance â€" such a ruby that would turn cloudy and an opal that would become pale as exposed to some poison. Also, emeralds were said to "burn" once near some kind of harmful substance. Sapphires and diamonds were known to have the ability to dispel madness, witchcraft and poison. There was a belief that when a person placed a poisonous reptile inside a glass that also has a sapphire, the reptile will die because of the rays emitted by the gemstone.

There are also some semi-precious stones that are believed to not only have the power to cure sicknesses, but also loneliness and depression. There were also those who thought that they possessed the power to influence events related to love and marriage.