Natural diamond crystal nestled in kimberlite. Image: Shutterstock

An intricate bowerbird's nest decorated with colourful objects to attract a mate. Image: BBC

Erasmus Stephanus Jacobs was 15 years old when he found the Eureka Diamond near Hopetown in 1867.

The Eureka Diamond was the first diamond discovered in South Africa and originally weighed 21.25 carats. It was later cut to a 10.73-carat cushion and is presently on display at the Mine Museum in Kimberley.