Carbonado, Ancient Impact Shock Diamond


Carbonados are strange black diamonds that are only found in a small handful of localities in South America and Africa. Scientists are still debating the origins of these unusual diamonds, but one of the leading theories is that they originate from a very ancient and massive meteorite impact when the continents of Africa and South America were still connected approx. 2.3 billion years ago. 

Carbonados are harder than normal diamonds and they are one of the hardest materials on Earth with a Mohs Hardness of 10. Black carbonado diamonds have an unusual porous-type appearance that is a product of their peculiar crystalline lattice structure. These diamonds possess trace amounts of exotic materials, exotic metals, and they have curious chemical properties not typically seen with more common diamond types associated with kimberlite deposits. For example, carbonados contain osbornite, which is a rare mineral associated with meteorites and was recently found in particles collected by NASA's Stardust mission to comet Wild 2.

These carbonados come from deposits in the Bahia province of Brazil. I only have a very limited quantity of these diamonds. 

Refer to the photo. The black centimeter cube is shown for scale and is not included. You are purchasing one micromount specimen like the one shown. Your purchase will include a labeled gemjar for safe storage.