The month of February has three (3) birthstones. One Primary and two Secondary birthstones. Each is quite different in their gemology and nature.
Amethyst is understood to be the 9th stone on, representing Issachar, one of the sons of Israel. For thousands of years Amethyst has been incorporated into the lives of many people, being highly valued for its healing properties.
Jacinth (Hyacinth Zircon)
Travelers in ancient times wore amulets made from zircon, in particular Hyacinth. They believed it would protect them from sickness and injuries and even the plague. In particular, it was believed it would help heal things like blisters, open sores and varicose veins.
Pearl has soft elegant feminine characteristics that were bound to ensure a highly valued place in many cultures. No doubt this contributed to it being called the Queen of Gems.