Crushed Rainbow Tourmaline Sand from Brazil, Medium Sand (0.25mm-2mm)

Tourmaline represents a large group of related mineral species that exhibit many unusual optical and physical properties. Chemically more complex than most minerals, tourmaline exhibits a substantial range of colors and varieties.  This crushed material is a mixture of dark green, light green, pink, blue, black, and yellowish-orange tourmaline. This unique tourmaline mixture would be a great choice for custom and one-of-a-kind art projects. Tourmaline is also one of the official birthstones for October. Our medium material is considered to be sand sized (very coarse sand to fine sand), ranging between 2 millimeters to 0.25 millimeters. Please see the corresponding sediment size chart.  Mineral Properties Mohs’s Hardness: 7 - 7.5 Specific Gravity (g/cm3): 3.00 - 3.26 Luster: Vitreous Color: Green, Pink, Blue, Black, and Yellowish-Orange  Origin: Brazil This product is not man-made, mixed with resin, dyed, or stabilized. Pictures are taken in full sun and material is dry. Size measure