Boulder Opal ‘Sea and Night Sky’ Brooch Circa 1990s

This unique, spectacular triangular brooch is set with one freeform solid Queensland boulder opal flat cabochon with two distinct bands of colour representing the nights sky and the sea. The opal is surrounded by a yellow gold custom mounting reminiscing an ‘arts and crafts’ design. Secured with a metal pin and hook catch. 

Gemstone: One natural triangular freeform solid boulder opal flat cabochon, 32mm x 28mm x 5.5mm, two distinct bands of colour evident, including a brilliant green, orange, mauve broad flash and patches of full spectral auras against a dark grey background, estimated weight 27.00ct

Metal: 18k yellow gold – XRF tested

Weight: 16.14 grams

Measurements: Length 4.8cm, width 3.3cm

Era: Late 20th Century Circa 1990s

Queensland Boulder Opal is celebrated not only for its visual appeal but also for its connection to the Australian Outback and the unique geological processes that give rise to this beautiful gemstone. They have a vibrant and captivating play-of-colours within. The colours can include a wide range of hues such as blues, greens, reds, and purples, and they can change as you view the opal from different angles. Unlike other opals that are typically cut as cabochons to showcase the entire gem, Boulder Opal is often left with its natural ironstone matrix as part of the finished piece. This matrix provides a unique and earthy contrast to the opal’s colours, making each piece truly one of a kind.