Crushed Blue Kyanite Blades (Grade A) from Brazil, Coarse Crush (2mm-4mm in Width, 0.5cm-2cm in Length)

Kyanite is a blue, fibrous metamorphic mineral that forms in distinctive thin blades. This mineral only forms under high pressure within the Earth's crust, which can tell you A LOT about the tectonic history of an area. Because kyanite crystallizes as thin blades, it also crushes up into progressively smaller, elongate crystals during the crushing process. Our coarse material is considered to be pea-sized gravel, with the average width of the kyanite blades, ranging between 4 millimeters to 2 millimeters. The average length of the kyanite blades range between 0.5 centimeters to 2 centimeters. Please see the corresponding sediment size chart.  Mineral Properties Mohs’s Hardness: 4.5 - 5 Specific Gravity (g/cm3): 3.5 - 3.7 Luster: Vitreous, Pearly Color: Light Blue 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 measurements are using the metric system (millimeters), including the metric ruler