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Material properties of diamond - Wikipedia
The Strange Mystery of the Black Diamond
How to Identify a Black Diamond: 5 Easy At-Home Tests
Carbonado, Wiki
Carbonado (BlueJaytheWizard), Steven Universe Fanon Wikia
Hibbonite
Raw Carbonado diamond – 9.12 x 7.07 x 3.55 mm – 1.63 ct - Catawiki
Sergio (carbonado) - Wikipedia