One of the most historical with the August birthstones, sardonyx is a combination of two varieties of chalcedony (cryptocrystalline quartz): sard and onyx. Bands of brownish purple to brown to dim orange sard alternate with usually white or black layers of onyx. Even though there are several chances to celebrate https://socialmediainuk.com/story13451872/facts-about-birthstones-by-zodiac-sign-revealed