Crushed Denim-Blue Dumortierite Powder from Mozambique, Fine Crush (<0.25mm)

Dumortierite is often confused with denim lapis lazuli; however, it is a distinct aluminum-rich mineral that only occurs at high temperatures within the Earth's crust. This particular dumortierite is from Mozambique and is considered to be grade A material with GREAT color.  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: 7 - 8.5 Specific Gravity (g/cm3): 3.26 - 3.41 Luster: Dull, Waxy Color: Denim Blue Origin: Mozambique 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).