2" Natural Rough Black Tourmaline Mineral Crystal Specimen Schorl Brazil Rubellite This crest housed part of

This crest housed part of the nasal passage and may have functioned as a resonating chamber for producing sounds

lived across eastern North America and could grow up to eight meters in length

Scientific significance: Provides insight into early arthropod evolution and the biodiversity of Paleozoic seas

providing protection from rivals and prey

2" Natural Rough Black Tourmaline Mineral Crystal Specimen Schorl Brazil Rubellite This crest housed part ofLocation: Brazil Weight: 4. 8 Ounces Dimensions: 2 Inches Long, 1. 9 Inches Wide, 1. 3 Inches Thick The item pictured is the one you will receive. Black Tourmaline is a highly sought after gemstone known for its striking black color, durability, and metaphysical properties. Also called Schorl, it is a member of the tourmaline group and forms naturally in igneous and metamorphic rocks. Its Mohs hardness of 7 to 7. 5 allows it to be fashioned into