Crushed Ruby (Corundum) from India, Medium Crush, Sand Size, 2mm - 0.25mm

Ruby, also known as corundum, is one of the hardest minerals with a Moh's hardness of 9. Corundum comes in a variety of colors, but the most well known types of corundum are ruby and sapphire. The difference between these two minerals is that ruby has more chromium than sapphire, giving it a reddish-purple hue. This particular batch of ruby is from India and is very high quality material. Ruby is also the official birthstone for July.

Our medium material is considered to be sand sized (very coarse sand to fine sand), ranging between 2 millimeters to 0.25 millimeters. Please see the corresponding sediment size chart. 

Mineral Properties

• Mohs’s Hardness: 9
• Specific Gravity (g/cm3): 3.95 - 4.10
• Luster: Vitreous
• Color: Reddish-Purple
• 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), including the metric ruler (cm/mm) as shown in the product photos.

***Please note that this mineral is dense; therefore, the smallest amount offered is one ounce.***