Now Showing: Making an 18-carat gold bracelet; 185-year old Victorian ring; and how rare gemstones are found 300-foot-deep mines?

The Mooka Boys unearth concrete opal

‘Beautiful’ 185-year old Victorian ring has a hidden secret

Making a men’s 18-carat gold bracelet

How rare gemstones are found 300-foot-deep mines

Argyle pink diamond grading system explained by John Calleija