Corundum Mineral Specimen, Each

Details

Corundum sample, approximately 1" (3cm) in size, ideal for studying mineral hardness and crystal habit - with a Mohs scale hardness of 9, only diamond is harder. This perfect-sized specimen is suitable for classroom identification labs and exercises, correlating well to Next Generation Science Standards Evidence Statements. It's ideal for exercises designed to distinguish between crystal habit and cleavage. The specimen comes in a clear, labeled, and barcoded bag for easy storage. Average specimen size: 2-3 cm. This aluminum oxide often grows in long, hexagonal crystals and can sometimes be found as gemstones, particularly ruby and sapphire. This mineral specimen is fantastic for use in mineral hardness exercises, as well as lessons in differentiating between cleavage and crystal habit.