White Howlite 8mm Cross - 15-16 Inch 29x41-47x59mm The presence of chromium is

The presence of chromium is what gives a ruby its red color

which may contain iron oxide

Hole Diameter: 0

Crazy Lace Agate is a banded Chalcedony that in its natural form is predominantly white with layers of brown

There are 37 different mica minerals

White Howlite 8mm Cross - 15-16 Inch 29x41-47x59mm The presence of chromium isWhite 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 to 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.