River Gemz

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

October is officially the month of River Gemz birthday extravaganza! 🎉 We've got not one, not two, but THREE celebration...
07/10/2026

October is officially the month of River Gemz birthday extravaganza! 🎉 We've got not one, not two, but THREE celebrations to get this party started! 🎂 Nano, our top dog (literally) turns 6 on the 11th, River Gemz is turning the big 4 on the 14th, and Dewi, the new kid on the block, is celebrating 2 years of being adorable on the 22nd. And as if that's not enough, October's birthstone is the Opal - talk about a gem of a coincidence! 💎

The River Gemz family wishes all October-born Librans and Scorpions a very special happy birthday.
30/09/2026

The River Gemz family wishes all October-born Librans and Scorpions a very special happy birthday.




25/09/2026

Some absolutely stunning unset Australian solid [not doublets or triplets] black opals to choose from; perfect ring stones.

Available online or in our Mannum store.




🎣 **GONE FISHING! 🏕️**The River Gemz family is taking a little time out for some fresh air, family time, camping and fis...
20/09/2026

🎣 **GONE FISHING! 🏕️**

The River Gemz family is taking a little time out for some fresh air, family time, camping and fishing! 💙

Our **Mannum store will be CLOSED on Wednesday 23rd September** while we head off for an overnight camping and fishing adventure. 🎣🔥🏕️

Sometimes you just need to step away, slow down and recharge — and we’re looking forward to a night under the stars, hopefully with a few fish on the line! 😄

**But don’t worry — our online store is OPEN as usual**, so you can still browse and shop River Gemz from wherever you are. ✨

We’ll be back in the Mannum store on Thursday, refreshed and ready to share more beautiful Australian opals and handmade treasures with you.

Thanks for your understanding and for supporting our little family business. ❤️

**See you soon — unless the fish are biting!** 🎣😉

18/09/2026

Sterling silver skull rings with natural nuggets in the eye sockets now back in store.

Sizes V, W, X, Y, Z+1 or Z+1.5

Price range $400-$500.

12/09/2026

It's not just Harri busy in the workshop making stuff, his little sis Marjut [aka me] made these 3 new phone/tablet stands. Hand crafted from wood with a small opal addition in each of course!

Available in our Mannum store & online [rivergemz.com.au].



02/09/2026

💙 September’s Birthstone: Sapphire 💙

Did you know each month has a special birthstone? For September, it’s the stunning Sapphire — a gemstone loved for its rich colour, timeless beauty and elegance. ✨

At River Gemz Mannum, we have three beautiful sterling silver sapphire options to celebrate September birthdays (or simply treat yourself! 😉).

💎 Two stunning pendants featuring a central sapphire surrounded by sparkling white topaz stones
💎 A gorgeous sterling silver bracelet featuring numerous sapphires arranged in two elegant rows

Whether you’re celebrating a September birthday or looking for a meaningful piece of jewellery, these sapphire designs are sure to impress. 💙

Pop into River Gemz Mannum and discover the collection for yourself!

27/08/2026

✨ River Gemz wishes Laura and Will all the very best for their wedding on Saturday and for the many wonderful years ahead!

A quick polish by Harri brought this beautiful white gold opal ring back to its best, all ready to shine for the big occasion. 💎🤍

Congratulations, Laura and Will! 🥂💍



Our River Gemz customers know that we LOVE our dogs, so it probably comes as no surprise that today we couldn’t help but...
26/08/2026

Our River Gemz customers know that we LOVE our dogs, so it probably comes as no surprise that today we couldn’t help but celebrate INTERNATIONAL DOG DAY! 🐾❤️

From our paw print pendants and earrings to our dog-inspired cheeseboards and handy phone & tablet stands, we love finding ways to bring our four-legged friends into our everyday lives.

Because let’s be honest… life is just better with a dog by your side! 🐶🥰

Happy International Dog Day to all the wonderful dogs — and their humans — out there! 🐾

21/08/2026

Sterling silver pendants each unique with solid [not doublets or triplets] Australian opals available online and in our Mannum store.






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

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