American Express

76 reviews

Opal Wave Gold-Filled Ring

Capture the ocean's glow. A shimmering opal wave set in durable 14K Gold Filled metal. Waterproof, tarnish-free, and designed to last a lifetime.

Ring Size

International Ring Size Chart

US/CA	UK/AU	EU	Circumference (mm)	Inside Diameter (mm)
3	F	44	44.2	14.1
3.5	G	45	45.5	14.5
4	H	47	46.8	14.9
4.5	I	48	48.0	15.3
5	J ½	49	49.3	15.7
5.5	K ½	51	50.6	16.1
6	L ½	52	51.9	16.5
6.5	M ½	53	53.1	16.9
7	O	54	54.4	17.3
7.5	O ½	56	55.7	17.7
8	Q	57	57.0	18.1
8.5	Q ½	58	58.3	18.5
9	S	60	59.5	18.9
9.5	S ½	61	60.8	19.4
10	T ½	62	62.1	19.8
10.5	U ½	63	63.4	20.2
11	V ½	65	64.6	20.6
11.5	W ½	66	65.9	21.0
12	Y	67	67.2	21.4

How to Measure Your Ring Size

Method 1: Measure an Existing Ring (Recommended)

Select a ring that already fits comfortably on your desired finger.
Use a ruler to measure the inside diameter (the distance straight across the inside of the ring) in millimeters.
Match your measurement to the "Inside Diameter" column in our chart above.

Method 2: Measuring Your Finger

Wrap a flexible measuring tape or a thin strip of paper around the base of your finger.
Mark the exact spot where the ends meet and measure that length in millimeters.
Match this length to the "Circumference" column in our chart above.

Pro Tips for the Perfect Fit ✨

Timing matters: Measure your finger at the end of the day when it is slightly larger.
Caught between sizes? We always recommend sizing up for the most comfortable fit.
Wider bands feel tighter: If you are choosing a thicker ring style, consider going up half a size.
Still unsure? We’re here for you. Reach out to our team at support@cofuze.com for personalized sizing advice.

Note: UK and Australian ring sizes are the same. US and Canadian sizes are also identical.

Free Worldwide Shipping

30-Day Returns

1-Year Warranty

✔️ Real 14K Gold Filled (1/20 14K GF stamped).

✔️ Iridescent White Opal inlay mimics ocean foam.

✔️ 100x thicker gold than plating, waterproof.

✔️ Hypoallergenic, lead & nickel free base.

I checked it carefully when it arrived. The '14K GF' stamp is there, and the metal looks solid. It’s definitely better quality than the stuff you find at the mall kiosks.

Charles P.

Shipping Information

We offer free, tracked worldwide shipping on all jewelry orders. Processing time: 1–3 business days Estimated delivery to the United States, United Kingdom, Canada, Australia, and most EU countries: 5–9 business days Estimated delivery to other countries/regions: 7–14 business days You’ll receive a tracking link by email as soon as your order has been shipped.

Return Policy

We want you to feel completely confident ordering from CoFuze. If you’re not in love with your jewelry, you can request a return within 30 days of delivery. Items must be unworn and in their original packaging. If your item arrives damaged or there is an error on our side, we will replace it or issue a refund at no extra cost. For change-of-mind returns (for example, if the style or size is not right), customers are responsible for the return shipping cost. For full details, please see our Refund & Return Policy.

Golden Hour, Forever

We all love the look of gold, but hate when it fades after a few wears. This ring is different. It is crafted with 14K Gold Filled technology, mechanically bonding a thick layer of real gold to the core. It contains 5% solid gold by weight—making it waterproof, sweatproof, and life-proof. The unique Wave Design cradles a glowing opal, reminding you of sunny days by the sea. Wear it to the beach, the gym, or the shower. It will shine as long as you do.

Beyond Plating

Luxury quality you can live in.

🌊

Wave Shape

Elegant curves inspire calm.

🛡️

Gold Filled

Won't peel or rub off easily.

🚿

Waterproof

Safe for shower and swimming.

✨

Opal Glow

Changes color in the light.

What customers are saying

Real feedback from verified buyers

Sarah J.

Verified Buyer

I was skeptical about the 'waterproof' claim, but I've worn this ring in the shower, the ocean, and while washing dishes for a month now. It still looks brand new! No green finger, no tarnishing. Finally, gold jewelry I don't have to baby.

Emily R.

Verified Buyer

The pictures don't do the opal justice. In the sunlight, it flashes pink, green, and blue. It looks like a little piece of the ocean on my finger. The wave shape is so unique and flattering. ❤️

Jessica M.

Verified Buyer

Super comfortable! The wave curve hugs my finger perfectly. It’s low profile so it doesn't catch on my sweaters or scratch my face. I sleep in it every night.

Chloe D.

Verified Buyer

I usually only buy solid gold because of allergies, but this 14K Gold Filled ring hasn't irritated my skin at all. It has that rich, yellow gold color, not the fake yellow of cheap plating. Highly recommend.

Madison T.

Verified Buyer

As a surfer girl, this ring is my vibe. It reminds me of the waves even when I'm stuck in the office. The opal looks like sea foam. Love it!

Olivia P.

Verified Buyer

I bought two to stack together, and they look like a cool abstract art piece. The gap in the wave also fits perfectly around my solitaire engagement ring.

Hannah W.

Verified Buyer

Looks like a $300 ring but costs a fraction of that. The '1/20 14K GF' stamp inside gave me confidence that it's real quality. A steal.

Zoe L.

Verified Buyer

Simple, elegant, and goes with everything. I wear it with jeans and t-shirts, and it adds just the right amount of polish without being too flashy.

Megan F.

Verified Buyer

I’m a nurse and wash my hands 100 times a day. This ring has held up beautifully. The opal is securely set and hasn't lost its shine.

Isabella K.

Verified Buyer

Got matching ones for me and my bestie. We call them our 'mermaid rings'. Such a cute symbol of our friendship.

Sophia A.

Verified Buyer

Was worried the opal would look like plastic, but it has real depth and fire. The gold feels heavy and substantial, not tinny.

Grace H.

Verified Buyer

The setting is very smooth. I can run my fingers through my hair without it getting snagged. That's a huge plus for me.

Danielle C.

Verified Buyer

Using this as a temporary wedding band while mine is being resized. Honestly, I might just keep wearing this one. It’s so unique.

Natalie S.

Verified Buyer

6 months later update: Still shiny, still gold, still beautiful. I've successfully converted all my friends to gold-filled jewelry because of this ring.

Michael B.

Verified Buyer

Bought this for my girlfriend who loves the beach. She absolutely loves it. She wears it everyday and tells me constantly how much she likes the color changes in the stone. Great gift.

David R.

Verified Buyer

Wanted something nice but not crazy expensive for our 2nd anniversary. The packaging was nice, and the ring looks very high-end. She thinks I spent way more than I did. :)

James T.

Verified Buyer

Gave this to my partner as a promise ring. The wave design is cool because we met surfing. She says it's the most comfortable ring she owns. 🔥

Your Questions, Answered

Details about Gold Filled technology.

What is Gold Filled?

Gold Filled is NOT gold plated. It consists of a thick layer of solid 14K gold mechanically bonded to a base metal. It contains 5% Real Gold by weight (100x more than plating). It is durable, tarnish-resistant, and can last a lifetime with care.

Can I wear it in water?

Yes! Because of the thick gold layer, this ring is Waterproof. You can wear it to wash your hands, shower, or even swim without worrying about it turning green or fading instantly.

Is the Opal real?

We use a high-quality Synthetic Opal (Lab-Created). This ensures the stone is durable enough for a ring (natural opal is very fragile) and has a consistent, vibrant fire color.

Is there a stamp inside?

Yes, the ring is authentically stamped with 1/20 14K GF, which is the industry standard mark for genuine Gold Filled jewelry.

Will it turn my finger green?

No. Gold filled jewelry is hypoallergenic. Because the thick gold layer separates your skin from the base metal, it is safe for almost everyone with metal sensitivities.