Natural Boulder Opal NecklaceFull Details: Natural Australian Boulder Opal Opal Colour Dark Blue Shape Free Form Material 925 Sterling Silver Bale This handcrafted, one of a kind piece, comes from the mines of Yowah, Queensland. Over millions of years the ever irresistible Boulder Opal formed to give you a piece that's everlasting.

Colour - Green / Blue

47 mm (l) x 2

Colour - Electric Green / Blue / Red

Material - 18kt Yellow Gold

Colour - Electric Royal Blue / Green

43 mm (H)

Opal Doublet Details:

Opal Colour - Electric Red / Blue/  Green / Purple

42 mm (H)

Full Details:  Australian Opal Loose Solid Black

Material - Adjustable Length Leather Necklace

and polishing an opal ready to be set