The Waverley Gem Club has had a Gemcraft and Mineral show for almost every one of its 41 years.
The show has garnered a reputation throughout the country for being one of the biggest and best displays of gemcraft.
This month gem enthusiasts from all over the country will be flocking to the Brandon Park Community Centre to buy and sell gems and jewellery.
There will be demonstrations in copper, enamelling and silversmithing in addition to competitions for the more experienced hands in cutting and carving.
For children, there will be competitions and the chance to fossick in punnets of gravel for their own gemstones.
Gwen Dunstan, of the Waverley Gem Club, says the show is the biggest one the club puts on each year.
"We sort of work all year around to do it.
"It's a real family event. You can spend the whole day there."
Mrs Dunstan has been involved in in the Waverley Gem Club for 11 years.
"I think I've always had a bit of an interest in it because I remember I tried to get interested when the children were young and I didn't have the time," she says.
"As soon as I got children and parents off my hands, I became very involved."
The club has about 150 members from 35 nationalities.
The club also has a juniors group that Mrs Dunstan says is "besotted" with the craft.
"It's not just the retired people."
So what brings them all together?
"A crazy love of rocks and working with things like that."
The Waverley Gem Club's annual Gemcraft and Mineral Show runs from 10am-5pm on September 22 and 23 at the Brandon Park
Community Centre, behind the fire station, on 645 Ferntree Gully Road, Brandon Park. Cost: $4 for adults, $2 for children. Concessions available. Details: Waverley Gem Club.