Green Tourmaline in Quartz - Old Stock The red of this mineral

The red of this mineral is caused by the presence of iron oxides

These iridescent colors are caused by light reflecting off layers of fossilized aragonite

These crustaceans lived during the Pliocene Epoch

Weight: 11 oz

This fossil has specimens on both sides in addition to a secondary species

Green Tourmaline in Quartz - Old Stock The red of this mineralThere are many, many collectors and mineral enthusiasts who focus solely on the world of tourmaline. With so many different species and locations from all around the world, it is almost a requirement to have some specimen of tourmaline in your collection. Why not start off with a beautiful dark green from Brazil? Size: 4. 3 in. Weight: 19. 1 oz Chemical Formula: XY3Z6B3Si6(O,OH)30(OH,F) Location: Brazil Tourmaline is a boron silicate mineral that is