Topaz is the birthstone for November according to the monthly gemstone calendar, with historical references dating back to ancient times.
It is a gemstone with a well-defined crystalline structure and a stable chemical composition. It can come in various natural colors, determined by trace elements.
Color variations do not alter the mineralogical identity of the gemstone. Transparency is a common characteristic in the varieties used.
Jewel in photo: London Blue Elegance Ring