All Earthfire zircons are 100% natural & untreated. Professionally cut in Australia.
Found in many brilliant colours, these Zircons have been fossicked from two places... Harts Ranges in the Northern Territory, and the North East region of Tasmania. The locations have been stated in each product listing.
Zircon is rated between 6.5 - 7.5 on the Moh gem hardness scale making it a great gem for jewellery.