Mathew Helm has finished Australia's greatest Olympics in diving with a silver medal.

Helm collected 730.56 points to be second on the 10m platform behind China's gold medallist, Hu Jia (748.08) in the final event of the Athens diving program.

The 23-year-old Australian had to pull out an amazing final dive to beat defending champion Tian Liang, of China, for the silver.

Helm scored four perfect 10s for the dive, collecting 99.96 points from the seven judges, to beat Tian by less than a point.

He held his head in his hands after realising the silver was his.

The Brisbane-based athlete's medal ended the Australian divers' campaign at the Athens Olympics with a gold, a silver and four bronze.

The men's 10m competition became a ten-a-thon with four of the 12 divers collecting perfect 10s during the final round of six dives.

Six of Australia's seven divers in Athens will take home medals.

Lynda Folauhola is the only one who didn't win a medal in Greece after finishing fourth with Loudy Tourky in the synchronised platform event.

Helm had already won bronze with Robert Newbery in the 10m synchronised competition.

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