The Mystery of the Black Diamond

Carbonados, also known as black diamonds, are unique geological formations discovered in 1841. Unlike typical diamonds, they are aggregates of microcrystals, making them tougher and more suitable for industrial use. Their origin remains a mystery, with theories ranging from meteorite impacts to interstellar origins. Carbonados are found only in Brazil and the Central African Republic, suggesting a possible extraterrestrial source.

Why are carbonados considered to be tougher than regular diamonds?

What evidence suggests that carbonados may originate from interstellar space?