Crushed Marine Blue Apatite Chips (Grade A) from Brazil, Pea-Sized Gravel (2mm-4mm)

Apatite is a calcium phosphate mineral that is naturally found in a variety of colors. This crushed apatite is from Brazil and has a beautiful, deep blue color. Apatite is a relatively soft mineral with a Moh's hardness of 5; therefore, it is a good pick for your woodworking projects. This crushed material is extremely clean and is premium quality apatite. 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: 5.0 Specific Gravity (g/cm3): 3.13-3.23 Luster: Vitreous Color: 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 (cm/mm) as shown in the product photos.