Carbonado Black Diamonds are among the most unusual and debated natural diamond materials, valued for their dark colour, porous structure, and uncertain origin. Found primarily in Brazil and the Central African Republic, Carbonado differs significantly from conventional gem Diamond formed deep within Earth’s mantle. Its formation remains unresolved, with proposed theories including terrestrial processes, ancient impact events, and possible extraterrestrial origin or delivery. This uncertainty gives Carbonado a distinctive place within meteorite-related and planetary science collections.

Carbonado is typically black to dark grey and has a polycrystalline structure, meaning it is composed of many microscopic Diamond crystals fused together rather than forming as a single clear crystal. Its texture is often rugged, granular, and irregular, with pits, inclusions, and unusual internal features. Unlike transparent Diamonds, Carbonado is opaque and has a more natural, raw appearance, reflecting its complex and still not fully understood history.

Studying Carbonado Black Diamonds provides insight into extreme formation environments and challenges traditional models of Diamond formation. While they should not be presented as confirmed meteorites, their possible connection to cosmic or impact-related processes makes them especially interesting within meteorite-adjacent collections. For collectors, Carbonado offers rarity, mystery, and strong visual character, combining natural Diamond with one of the most intriguing origin stories in geology.