Opalton is the home of Queensland’s spectacular boulder opal and is famous for the enormous quantity and quality of its opal. Nestled away 123 kilometres south-west of Winton, opals were first discovered here in 1888 and the first mine was worked in 1894. In 1899, the largest opal ever recorded was mined from Opalton. it was over 10 feet (3m) long and rumoured to be as thick as a man’s leg! By the end of the 19th century, Opalton was a bustling township.
https://www.experiencewinton.com.au/about-winton/towns-of-winton-shire/opalton
