Crushed Blue Sapphire (Corundum) from Sri Lanka, Coarse Crush, Gravel Size, 4mm - 2mm

Blue sapphire, 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 sapphire and ruby. Blue sapphires are a rare gemstone, even rarer than diamonds, which is why they are so valuable!

Sapphire is considered to be a precious stone (the other precious stones are diamond, ruby, and emerald). This particular batch of crushed sapphire is from Sri Lanka and is very high quality (Grade A). Grade A sapphires are generally opaque - just one step below gem-quality sapphires that have good clarity. Sapphire is the official birthstone for September.

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: 9
• Specific Gravity (g/cm3): 3.95 - 4.10
• Luster: Vitreous
• Color: Blue
• Origin: Sri Lanka

This product is not man-made, mixed with resin, dyed, or stabilized. Pictures are taken in full sun. Stone is wet in the 1st and 2nd photos. Stone is dry in the 3rd  photo. 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.***