Cosmopolitan Jewellers

Cosmopolitan Jewellers

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Sydney's premier jewellery house, specialising in Australian Opals, South Sea Pearls, Pink Diamonds set in hand crafted 18k fine jewellery.

17/08/2026

An extraordinary gem-grade Australian Black Opal 💚💙✨

Alive with intense electric greens, vivid blues and flashes of golden fire, this exceptional opal is surrounded by a brilliant diamond halo — a statement piece that truly comes alive in the light.

Nature’s artwork, one of a kind.

FineJewellery OpalJewellery

14/08/2026

THE PROCESS → THE RESULT → WORN ✨

From a beautiful pair of Australian Boulder Opals, to sketch, to the finished piece.

Designed around the stones. Made to be worn. 💙💚

09/08/2026

đź‘‘ Royal Blue. Royal Presence.

A ring designed with grandeur in every detail.

At its heart sits an exceptional Australian Black Opal, displaying a captivating royal blue colour — deep, intense and incredibly striking.

The opal is embraced by an elaborate luxury setting of vivid green tsavorites, rich blue sapphires and brilliant diamonds, creating layers of colour, sparkle and dimension. From every angle, the sculptural design reveals another intricate detail, giving the piece an unmistakably regal presence.

Bold yet sophisticated, extravagant yet beautifully composed — this is high jewellery designed to be noticed.

29/07/2026

Aurora, captured in opal. ✨

This gem-grade Australian Black Opal glows with electric blues and vivid neon greens, creating a display so breathtaking it almost looks like the Aurora Borealis dancing across the night sky.

Every movement reveals a new flash of colour, making this one-of-a-kind gemstone a true masterpiece of nature.

A rare treasure. No filters. Just nature at its finest.

28/07/2026

Green so bright, it almost glows. đź’š

An extraordinary Australian black opal bursting with vivid electric green fire, perfectly framed by brilliant diamonds.

Nature doesn’t make many like this.

✨ Available now.

FineJewellery

23/07/2026

A wearable work of art.

From the sparkling butterfly details to the breathtaking Queensland boulder opal, every element of this pendant is designed to captivate. Rich flashes of cobalt blue and vivid green dance across the gemstone, ensuring no two moments—and no two views—are ever the same.

Crafted for someone who appreciates the extraordinary. 💙💚✨

21/07/2026

Two metals. Two personalities. One extraordinary Australian Black Opal. 💙✨

Crafted in 18K White Gold and 18K Yellow Gold, each ring tells a different story while showcasing the unmatched beauty of natural Australian Black Opal.

Look a little closer, and you’ll discover the intricate diamond-set basket setting—beautifully detailed from every angle, because true craftsmanship is found in the details.

🤍 White Gold or 💛 Yellow Gold?

Which one would you choose?

AustralianOpal

18/07/2026
22/10/2025

Gem grade Black Opal! 15.54ct, just arrived in store!

Photos from Cosmopolitan Jewellers's post 02/09/2025

Another Gem grade collector Black Opal! 32ct, perfect high dome nobby from Lightning ridge.

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Shop 2. 01, 140 George Street
The Rocks, NSW
2000

Opening Hours

Monday 9:30am - 6pm
Tuesday 9:30am - 6pm
Wednesday 9:30am - 6pm
Thursday 9:30am - 6pm
Friday 9:30am - 6pm
Saturday 9:30am - 6pm
Sunday 9:30am - 6pm