Hematite Copper Plated 2x4mm Corner Cut Nugget - 15-16 Inch closeout-8-inch meaning that their facets were

meaning that their facets were cut using industrial grade diamond

The shell is known for its distinct knobs on the ridges

which come in a variety of colors

Indigo gabbro is a color variant of the igneous mineral

also known as the Stone Age

Hematite Copper Plated 2x4mm Corner Cut Nugget - 15-16 Inch closeout-8-inch meaning that their facets wereHematite 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.