Hematite White Silver Plated 2mm Cube 15-16 Inch Manganese Spar River Stone is a form

River Stone is a form of limestone composed of quartz

which comes in many forms and color variations

Sometimes called the "Black Prince's Ruby" for its role in the English crown

The stone includes shades of blue-gray

Hematite White Silver Plated 2mm Cube 15-16 Inch Manganese Spar River Stone is a formHematite is an iron oxide and one of the few gemstones with a metallic luster. When tumbled it can have the look of polished steel. Hematite is black to steel gray or silver gray, as well as brown to reddish brown or red in color. Its name is derived from the Greek word for blood, haima, owing to its red appearance when sliced thinly or powdered.