Prehnite 8x10-9x13mm Side Drilled Pebble - 15-16 Inch Terra they come in a rainbow

they come in a rainbow of colors besides red

Shattuckite is a rare copper silicate hydroxide mineral

grinding wheels and cutting disks

often used in healing and meditation and as religious objects in funerary rites and to dispel evil

Prehnite 8x10-9x13mm Side Drilled Pebble - 15-16 Inch Terra they come in a rainbowPrehnite was the first mineral to be named after a person: its discoverer, Dutch Colonel Hendrik Von Prehn. Von Prehn discovered the stone in South Africa in 1774. Prehnite is translucent to transparent, in colors from light green to yellow green to olive, with occasional inclusions of Black Tourmaline that crisscross the stone in fibrous patterns. It is a phyllosilicate composed of silicon, calcium and aluminum with trace amounts of iron.