Hematite Antique Brass Plated 2x6mm Hexagon - 15-16 Inch Paperclip Chain The two most popular classes

The two most popular classes of Australian Opal are Black Opal mined in Lightning Ridge and Fire Opal

and as a source of colorful mother-of-pearl

5 billion years ago

clear quartz

Hematite Antique Brass Plated 2x6mm Hexagon - 15-16 Inch Paperclip Chain The two most popular classesHematite 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 to gray or silver to 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.