Do not use a home ultrasonic machine or jewelry cleaner. Sometimes tourmaline is used as a birthstone for October and spans the spectrum from red to violet. It also occurs in color combinations in one stone which accounts for its popularity. It is not as fragile as opal and is sometimes selected by those who prefer faceted stones. November - Topaz Topaz is the accepted birthstone for November.
Most people think of topaz as a transparent golden yellow gemstone.
The lore, magic and romance of topaz goes back many thousands of years. It holds the distinction of being the gemstone with the widest range of curative powers. The Greeks felt it gave them strength. In addition, it supposedly cooled tempers, restored sanity, cured asthma, relieved insomnia and even warded off sudden death. Topaz is said to make its wearer invisible in time of emergency.