MATTE Purple Sardonyx (dyed) 10mm Star Cut Round - 15-16 Inch September also known as Calligraphy Stone

also known as Calligraphy Stone or Miriam Stone

Moss Agate is a variety of Chalcedony

but also for industrial purposes from watch gears and scientific instruments to sandpaper and other abrasives

tourmaline and other minerals

An orthoproxene mineral

MATTE Purple Sardonyx (dyed) 10mm Star Cut Round - 15-16 Inch September also known as Calligraphy StoneSardonyx has a Sard base, typically of brown or black, with bands of white Onyx running through it. Sard is not Onyx, but rather a dark variety of Carnelian. Sardonyx is sometimes treated to bring out its reddish tones. It is believed by some to improve memory and increase analytical skills.