How much are you supposed to spend on an engagement ring?
Quick answer
There is no rule. The three months' salary line is a 1930s De Beers advertising campaign, not a tradition. Spend what suits your finances. The most useful number in Australia is what most couples actually pay, which sits broadly around $1,500 to $5,000 depending on stone choice and setting, with lab-grown diamonds and moissanite stretching that budget the furthest.
What Australian couples actually spend
Recent industry reporting puts the 2026 Australian average between AU$5,000 and AU$7,500, with the median closer to AU$4,500 to AU$5,500. Couples in Sydney and Melbourne tend to spend more, and the typical budget falls outside the capital cities. The single biggest variable is the centre stone: a 1ct natural diamond in G VS1 sits around AU$7,000 to AU$12,000, while the equivalent lab-grown stone is closer to AU$1,500 to AU$2,800. That gap is why couples on a modest budget often end up with a much larger lab-grown stone than they would have managed with natural.
Where the money tends to go
Centre stone choice moves the price most. After that, carat weight, metal type and karat, and the labour of the setting all matter. A 1ct lab-grown diamond solitaire in 18k white gold is a different price from a 1ct natural diamond halo with pave in platinum, even though both read as the same shape on the finger.
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