Gem and stone enthusiasts from all over Australia came to Lithgow over the Easter break for 53rd National Gem and Mineral Show.
The show, also known as Gemboree, attracted around 4000 visitors according to event chairman Colin Wright.
"The police were in twice a day, couldn't believe the crowds," Mr Wright said.
"They expected only 50-odd cars and I don't know how many hundred we had parked around the area but they were very happy with it.
Mr Wright mentioned a large amount of people travelled up from Sydney by train and three busloads from Canberra.
The success of the event had flow on effects, with many clubs signing up new members across the weekend.
"People have seen the hobby and they would like to have a go at it," Mr Wright said.
With the large crowds came the task of keeping them fed.
"A lot of food, everyone was happy with the local Lions Club, they did very well. They provided a free breakfast for everybody on site on Sunday morning."
Mr Wright was pleased the event went off without a hitch.
"We're very happy that it went off well and the weather was kind to us,” he said.
"Thanks for all the people of Lithgow and the council has been brilliant.
"Lithgow Council, they've done everything I wanted and more."