The Enigma: Billion-year-old black diamond sold for £3.16m - BBC News
The New Black Mask Quarterly No. 2 by Bruccoli, Matthew J
Inside India's lab-grown diamond industry - BBC News
Big Ugly' 3.29-carat diamond found at Arkansas state park
Flawless 102-carat diamond a 'bargain' at $16m - BBC News
The 10 most iconic jewels through history - BBC Culture
Botswana diamond could be world's third largest - BBC News
At the beginning of the 18th Century, India's share of the world
Mir Diamond Mine – Mirny, Russia - Atlas Obscura
This huge black diamond just sold for £3.1 million. No one knows
World's largest white diamond in Queen's sceptre seen in
Ancient diamonds have been found near the Earth's core - BBC Newsround