New Zealand had won gold at every Games since the sport made its debut in 1998 and had earlier easily dispatched Australia in the semi-finals.
In the end though, the Springboks had too much pace and class for the defending champions. Seabelo Senata was the star of the show, scoring twice to take his tournament tally to 11.
Australia beat Samoa 24-0 to win the bronze medal, while Scotland, England and Wales all failed to progress beyond the quarter-finals.
Image via Getty