8.5cts - Old Collection TOP Australian Boulder Opal Doublet featured on discovery channel Nuts like the ones mentioned

Nuts like the ones mentioned above are known as the rarest of any opal formations in the world and can sell for anything from $1000 to $100

2 x natural diamonds of HSI quality adorn the ring

This piece looks even better to the naked eye

G/VSI diamond

and how/why they Opalised

8.5cts - Old Collection TOP Australian Boulder Opal Doublet featured on discovery channel Nuts like the ones mentionedOur highest quality Boulder Opal Doublets are a fraction of the price of a solid opal. Made with all natural opal materials, the original boulder ironstone on the back and a natural opal face. This Top Doublet displays predominantly gorgeous green and blue colouration in playful floral, flag and chaff patterns. These doublets will not be affected by water and can be worn the same as any natural stone when set into jewellery. No extra care needed! Once