Tourmaline is associated with the month of October due to its exceptional chromatic variety, which recalls the change typical of the autumn season.
It does not refer to a single gem, but to a group of minerals with a complex and variable chemical composition. This complexity is the basis for the great diversity of natural colors.
In many tourmalines, multiple colors can be present within the same crystal, arranged in distinct zones. This characteristic is one of the most recognizable of the group.
Jewelry in photo: Tourmaline necklace, Tourmaline bracelet