Crushed Denim-Blue Dumortierite Chips from Mozambique, Pea-Sized Gravel (2mm-4mm)

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. This crushed material is extremely clean and has a rich denim-blue color when wet.  Our coarse material is considered to be pea- sized gravel, ranging between 4 millimeters to 2 millimeters. 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. Stone is wet in the 1st, 3rd, and 5th photos. Stone is dry in the 2nd, 4th, and 6th photos. Size measurements are using the metric system (millimeters), including the metric ruler (cm/mm) as shown in the product photos.