Crushed Blue Kyanite and Ruby in Matrix Powder from India, Fine Crush (<0.25mm)

This material is a blend of kyanite and ruby in matrix with minor amounts of green fuchsite and silvery muscovite. This beautiful, high-pressure metamorphic rock came from India, where high-pressure plate tectonics are very active. This unique combination of minerals would be an ideal selection for those seeking an unconventional material for their project. Our powdered material consists of mostly silt and clay sized particles. Our powders do have a slight grit to them. Please see the corresponding sediment size chart.  Mineral Properties Mohs’s Hardness: 4.5 - 7 (Kyanite), 9 (Ruby)  Specific Gravity (g/cm3): 3.56 - 3.69 (Kyanite), 3.98 - 4.1 (Ruby)  Luster: Vitreous Color: Blue and Purplish-Red Origin: India 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).