UNIQUE AUSTRALIAN GEMS

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About US

Costello’s is an Australian jewellery retailer specialising in the unique gems of Australia – the world’s finest and some say the best.

The brilliance of the opal from the dreamtime outback, the elegance of the Argyle Diamond from Western Australia’s Kimberley ranges, and the romance of the South Sea Pearl from the waters around Broome.

What We Make

ONLY THE FINEST

The brilliance of the opal from the dreamtime outback, the elegance of the Argyle Diamonds from Western Australia’s Kimberley ranges, and the romance of the South Sea Pearl from the waters around Broome.

Opal

Opals set apart from other gemstones because of its characteristic appearance and vibrant colours.

DIAMONDS

Diamonds are the hardest, the most imperishable, and the most brilliant of all precious stones.

PEARLS

South Sea Pearls are often referred to as the Rolls Royce of pearls.

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Custom Made Diamond Jewellery by COSTELLO'S
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