White Howlite 5x15mm Flat Chip 8-Inch - CLEARANCE Size_8-9mm Sardonyx is sometimes treated to

Sardonyx is sometimes treated to bring out its reddish tones

meaning it forms by replacing another mineral’s crystal structure atom by atom with its own crystal structure

Crazy Lace Agate is named for its swirling and circular patterns

A variety of Andalusite

White Howlite 5x15mm Flat Chip 8-Inch - CLEARANCE Size_8-9mm Sardonyx is sometimes treated toWhite Howlite is named for Canadian mineralogist Henry How, who first discovered the stone in Southern California in 1868. It is typically white or light gray with gray, black or brown veins running through it in web like patterns. Because of its softness, Howlite can be easily dyed and is often treated to be blue for use as a substitute for turquoise.