Gold Coast Suns star and dual Brownlow medallist Gary Ablett Jr is set to marry his girlfriend Jordan Papalia after proposing with a rock that makes Kim Kardashian​'s 15-carat piece from Kanye West look like Kinder Surprise prize.

The couple, who split their time between the Gold Coast and Melbourne, announced their engagement via the new age classified – an Instagram post with few hashtags and emojis thrown in for good measure.

Gary Ablett Jr of the Gold Coast Suns and his new fiancee Jordan Papalia attend the 2014 Brownlow Medal. Credit:Scott Barbour

"How stunning is my fiancé?" the former Geelong forward posted to his 89,000 followers complete with a winky face and diamond ring emoji.