This is an adjustable ring setting.

This Aurora setting is looking for a 18 x 13mm opal The stone should be 4mm -6mm thick.

The Opal Trap

https://www.opalauctions.com/auctions/the-opal-trap-53frogs-1369671

Welcome to 53Frogs, where we run hundreds of no reserve auctions every week! But with all of those auctions spread out across so many different categories on Opal Auctions, it can be a bit overwhelming to find them all. The best way is to go to our shop 53frogs, then sort by "Auctions" and then by "Time Left"

or you can copy and paste this link

https://www.opalauctions.com/stores/53frogs?query=%22NO%20RESERVE%22

And don't forget - if you're buying multiple items from our shop, we offer automatic combined shipping to help save you some extra cash. Just make sure to pay for all of your items at the same time to take advantage of this offer.

Now, a quick word about our return policy: if you're not completely satisfied with your opal when it arrives, you're welcome to return it for a full refund. Just keep in mind that once you alter or cut the rough opal in any way, it becomes yours and we cannot offer an exchange. So be sure to think carefully before you start cutting! And if you do decide to alter your opal, please remember that by doing so you are accepting ownership and cannot leave negative or neutral feedback.

Before you make your purchase, there are a few things you should know:

Please check out within 7 days of your first win. We cannot hold your package after you check out. Once you check out, your package will be lodged with Australia Post during the next Monday or Thursday shipping window. We accept PayPal and credit card payments through PayPal.We accept PayPal and credit card payments through PayPal.

We ship all items within 48 hours of payment, unless it's a holiday, in which case we'll ship on the next working day.

Standard shipping typically takes 5-21 working days to arrive. Please note that the buyer is responsible for any customs/import duties or taxes levied in their country.

Our guarantee: We want you to be completely satisfied with your purchase from 53Frogs. If for any reason you're not happy, you can select a no-hassle return as long as the material is in its original condition. Just send it back (unaltered) within seven days of receiving it, and we'll process a full refund for your purchase minus the shipping cost as soon as we confirm that the items are in their original condition.

Thanks for choosing 53Frogs, and don't hesitate to reach out if you have any questions or concerns. Happy shopping!