Australian Opals

Own a piece of Australia

Come in to see the award-winning collection of opal jewellery, learn about the diversity of Australian Opals and how they were formed. Our staff have over 150 years experience in Australian opals and jewellery design.

The Ultimate Gift

A Piece of Australian History

These beautiful gemstones took millions of years in the making.  They are some of the rarest, and most diverse gemstones on earth. We take these treasures and create one-of-a-kind jewellery pieces, especially for you.

If you go anywhere for Australian Opals
make sure you come into Giulians.

Be educated by experts

Come in for a truly unique experience where we educate you on one of the world’s most sought-after gemstones and how they were formed. We offer duty-free services and can deliver worldwide.

  • Only Natural Solid Opals

  • One of Australia's Largest Collections of Opals

  • Uniquely Australian

  • Millions of years of Australian history

  • Natural, solid opals - not doublet or triplet (layered)

  • Australia's National Gemstone

Australia’s National Gemstone

Black Opals

  • Black Opals are the most valuable and rarest form of opals on earth
  • They display many unique colours, with beautiful patterns
  • Their play-of-colour or ‘fire’ can show blues, blue-greens through to oranges and reds
  • Found in the Northwest region of NSW in the mining town of Lightning Ridge

browse our black opals


Boulder Opals

  • Boulder opal is often cut into unusual or free-form shapes due to the way it forms
  • The gems are always cut and polished with the strong natural host rock retained to form part of the gem
  • Similar to black opals, boulder can display vibrant play-of-colour ranging from bright blue-greens through to rare cherry reds

browse our boulder opals

Coober Pedy

White Opals

  • Australia’s main source of white opal is mined in central South Australia in a place called Coober Pedy.  It was given this name in 1920, derived from the Aboriginal words “Kupa Piti”, meaning boy’s waterhole
  • White opal ranges from a creamy white colour to crystal or translucent with bright pastel fire
  • It is sometimes referred to as light or milk opal

browse our white opals

We Offer

Genuine and Authentic Australian Opals.
The rarest, most valuable stones in the world.

You will be sure to find something for that someone special.

We have one of the finest collections of Australian Pearls and Australian Opals.