Opal Diamond Factory

Opal Diamond Factory Established in 1974, Opal Diamond Factory is Adelaide’s oldest and largest opal, diamond and coloured gem specialist.

Established in 1974 in the Opal capital of the world, Coober Pedy, and now situated in Adelaide’s iconic Beehive Corner, Opal Diamond Factory is Adelaide’s oldest and largest opal and diamond specialist, specialising is custom made pieces. Our collection of South Australian crystal and white opals, Queensland boulder opals and famous Lightning Ridge black opals is the most extensive in Australia.

Amid the hot, red dust of Coober Pedy in South Australia’s far north, opal pioneer John Ryneš and son Mike Saj-Ryneš discovered a love for Australia’s national gemstone. At the Opal Diamond Factory, the Ryneš family crafts jewellery, including bespoke pieces, from opals, ethically-sourced GIA certified diamonds and other precious stones. We are proud to have played small parts in thousands of stories - from love celebrations and special moments, to the creation of keepsakes and treasured gifts. Collaborating with our customers is at the heart of what we do. Our success is the result of passion and hard work; whether it be cutting rough opals straight from the mine, or shaping elegant, custom jewellery in our design studio. To view our exclusive range or design your own custom piece, we invite you to visit our Adelaide showroom, or meet us via a virtual appointment.

25/06/2026

MULTI-HUED 🌈

FEATURED: Colourful Triplet Opals set in a sterling silver/gold plated tear drop bezel earring with a butterfly fastening.⁠⁠⁠⁠⁠

32-34 King William Street Adelaide⁠
OPALDIAMONDFACTORY.COM.AU

T H R O W  B A C K  T H U R S D A Y 🔙As we prepare for renovations in our showroom from the 27th of June, we're taking a...
24/06/2026

T H R O W B A C K T H U R S D A Y 🔙

As we prepare for renovations in our showroom from the 27th of June, we're taking a trip down memory lane with this throwback photo of our original King William Road showroom. So much has changed over the years, but our passion for opals and fine jewellery remains the same.
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32-34 King William Street Adelaide⁠
OPALDIAMONDFACTORY.COM.AU

22/06/2026

FANTASY 💜

For the fantasy girlies who dream of dragons, romance, hidden realms, and epic adventures. 💫 This looks like it was plucked straight from the jewellery box of a fantasy novel's leading lady.
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32-34 King William Street Adelaide⁠
OPALDIAMONDFACTORY.COM.AU

SOUTH SEA PEARLS 🫧Just arrived in our showroom – simple yet striking South Sea Pearl earrings suspended from sterling si...
21/06/2026

SOUTH SEA PEARLS 🫧

Just arrived in our showroom – simple yet striking South Sea Pearl earrings suspended from sterling silver elongated drop hooks create a sleek, contemporary statement.

18/06/2026

OPALS ARE A GIRLS BEST FRIEND 🩵

FEATURED: 9K yellow gold band with pear shaped South Australian Solid Light Opals, from Coober Pedy to our showroom ready to shop.
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32-34 King William Street Adelaide⁠
OPALDIAMONDFACTORY.COM.AU

CUSTOM CREATIONS 💫Step into our showroom and let us help you create your next jewellery piece. Our experienced staff wil...
17/06/2026

CUSTOM CREATIONS 💫

Step into our showroom and let us help you create your next jewellery piece. Our experienced staff will guide you through our bespoke process, ensuring every detail is considered and beautifully executed.
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32-34 King William Street Adelaide⁠
OPALDIAMONDFACTORY.COM.AU

15/06/2026

NEW ARRIVAL 💫

Delicate flashes of colour meet classic craftsmanship. These Solid Light Opal stud earrings are beautifully bezel set in 9K yellow gold and finished with butterfly backs for comfortable all-day wear.
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32-34 King William Street Adelaide⁠
OPALDIAMONDFACTORY.COM.AU

KICK THOSE WINTER BLUES 🌧️and spoil yourself with something from ODF.... like a South Sea Pearl bracelet crafted with 92...
14/06/2026

KICK THOSE WINTER BLUES 🌧️

and spoil yourself with something from ODF.... like a South Sea Pearl bracelet crafted with 925 sterling silver.
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32-34 King William Street Adelaide⁠
OPALDIAMONDFACTORY.COM.AU

11/06/2026

BLUE HUES 💙

To match the beautiful dark blue earrings we shared, we have this stunning dark blue triplet opal pendant set in sterling silver. With its rich ocean-like colours, it's the perfect piece to complete the set. 💙✨
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32-34 King William Street Adelaide⁠
OPALDIAMONDFACTORY.COM.AU

T H R O W  B A C K  T H U R S D SA Y 🔙Before the showroom, before the branding, and before retirement was even a thought...
10/06/2026

T H R O W B A C K T H U R S D SA Y 🔙

Before the showroom, before the branding, and before retirement was even a thought - there was John. Founder, skilled opal cutter, proud Czech, and a lifelong lover of Australian opals.
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32-34 King William Street Adelaide⁠
OPALDIAMONDFACTORY.COM.AU

Address

32-34 King William Street
Adelaide, SA
5000

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm
Saturday 9am - 5pm
Sunday 11am - 3pm

Telephone

+61451770900

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