They're multicolored. Color doesn't play a strong role on Birthstones, rather the symbolism behind each actual type of crystal (or mineral!) that is more determining.
History of Birthstones
The Birthstones have their origin history traced back to biblical times. Almost all civilizations have their own version of which stone corresponds to which month of the year, from the high priest's breastplate, to ancient Egypt all the way to modern conventions
Zodiac Birthstones are Birthstones that happen to also be a Zodiac stone at the same time. If you're looking for Crystals for each one of the Zodiac signs, go to our Zodiac Stones Collection
Shop for birthstones by month and by zodiac sign, browse through all birthstone colors! They make the perfect birthday gift