River Gemz

River Gemz 💎 Australian Opals – Unset & Set, Sales & Repairs
👩‍❤️‍👩 Family-run by siblings Harri & Marjut + pups Nano & Dewi
🏬 Visit us in Mannum or shop online

✨ EOFY SALE NOW ON ✨For the entire month of June, enjoy 10% OFF everything at River Gemz — online and in our Mannum stor...
01/06/2026

✨ EOFY SALE NOW ON ✨

For the entire month of June, enjoy 10% OFF everything at River Gemz — online and in our Mannum store.

From stunning Australian opals and handcrafted jewellery to unique gifts and one-of-a-kind treasures, now is the perfect time to find something special 💎

Whether you’ve been admiring a statement piece or searching for a meaningful gift, our EOFY sale is the perfect excuse to treat yourself or someone you love.

💬 Comment “We love opals” below and we’ll send you the exclusive discount code via DM.

Thank you for supporting River Gemz — we look forward to welcoming you online or in-store.

22/05/2026

Some gorgeous yellow gold pendants - what do you think?
Now available in our Mannum store and online.



I, Marjut, will be back on deck on Monday [10am - 4pm] with Nano and Dewi assisting, whilst Harri continues his R&R [aka...
16/05/2026

I, Marjut, will be back on deck on Monday [10am - 4pm] with Nano and Dewi assisting, whilst Harri continues his R&R [aka fishing]. The online store remains open 24-7 for your browsing and shopping convenience.

15/05/2026

Harri has been a busy boy in the workshop over the past few weeks making all sorts including the wonderful selection of sterling silver earrings.

All with natural solid Australian opals.





River Gemz will be closed Sunday 17th May. Harri has abandoned ship to go fishing, I'm busy herding puppies, and Nano an...
13/05/2026

River Gemz will be closed Sunday 17th May. Harri has abandoned ship to go fishing, I'm busy herding puppies, and Nano and Dewi are on high alert uncovering top secret canine shenanigans.

The emerald, May's birthstone, boasts a vibrant green hue and storied past. Symbolizing renewal and affection, it makes ...
04/05/2026

The emerald, May's birthstone, boasts a vibrant green hue and storied past. Symbolizing renewal and affection, it makes a significant gift for May-born individuals. These two pendants, paired with Palmer River natural nuggets, create a stunning combination. You can find them online and in our Mannum store.

A perfectly matched set that captures the magic of Australian opals 💙💚These striking drop earrings and pendant feature s...
23/04/2026

A perfectly matched set that captures the magic of Australian opals 💙💚

These striking drop earrings and pendant feature shimmering Lightning Ridge crystal opals, alive with vibrant flashes of blue and green that shift beautifully with every movement. Set in sleek sterling silver, the modern stepped design creates an elegant, eye-catching look—effortless to wear from day through to evening.

✨ Handcrafted design by River Gemz's Harri
✨ Genuine Australian natural opals
✨ One-of-a-kind colour play

Wear them together for a refined statement, or style individually for a subtle pop of colour.

Discover the beauty of opal, reimagined.

Another YouTube [link in comment] sensation from River Gemz. Have you ever wondered what 18K 750 means and other Hall Ma...
17/04/2026

Another YouTube [link in comment] sensation from River Gemz. Have you ever wondered what 18K 750 means and other Hall Marks seen in jewellery.

https://youtu.be/-PiInC0MrSI

Diamonds, white topaz, and cubic zirconia radiate the essence of April's birthstones, and we are thrilled to introduce e...
17/04/2026

Diamonds, white topaz, and cubic zirconia radiate the essence of April's birthstones, and we are thrilled to introduce exquisite pieces from our jewellery collection that feature these stones, as beautifully showcased in the four accompanying images.

🏆 Employee of the YearNano 💙🐶Our official Canine Customer Relations Specialist, greeting every customer with maximum ent...
07/04/2026

🏆 Employee of the Year

Nano 💙🐶

Our official Canine Customer Relations Specialist, greeting every customer with maximum enthusiasm (and tail wags).

Come experience the Labradoodle welcome for yourself ✨

Address

79B Randell Street
Mannum, SA
5238

Opening Hours

Monday 10am - 4pm
Wednesday 10am - 4pm
Thursday 10am - 4pm
Friday 10am - 4pm
Saturday 10am - 4pm
Sunday 10am - 4pm

Telephone

+61418152950

Website

https://www.youtube.com/@RiverGemz

Alerts

Be the first to know and let us send you an email when River Gemz posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Shortcuts

Share

Category