Lay a ring you own over the circles. The matching circle is your size.
Cut out the strip, wrap it around your finger, thread the end through the slit, and read your size.
| US | Diameter | Circumf. | UK/AU/IE | EU |
|---|
UK, Australia & Ireland share the letter system. European sizes are approximate conversions.

Hard-wearing materials, finished by hand — and every set is backed by our lifetime warranty.
Free size exchanges on both rings — we send a brand-new ring in the right size, with a prepaid return label for the old one.
“I had to exchange it twice due to sizing issues (my fault) and was met with amazing customer service.”
A date. A name. An inside joke no one else will get. Free engraving — a $30 value — inside both bands. Shipped together in a gift-ready ring box.
“Rings look so beautiful. Engraving of my wedding song is perfect.”

Foreverings started in 2017 when our founder left aerospace engineering to make rings the way he made flight hardware — material selection, tolerances, and final finish held to the same standard.
Years later we're still a family business based in Florida. Every ring is inspected by hand before it ships, and every one is engraved free.
Celebrate your love with this His & Her Black Opal Ring Set. Crafted from durable black ceramic, these matching wedding bands feature a stunning black fire opal inlay and a polished dome design. Comfortable and stylish, these rings make perfect promise rings, wedding bands, or a unique gift for couples. Add engraving for a meaningful personalized touch to any special occasion.
►Material: Ceramic and Crushed Black Fire Opal Inlay
►Color: Black
►Comfort Fit
►His Band Width: 8mm
►Her Band Width: 4mm
►Fit is true to size for Her band (4mm).
►Fit is slightly loose for His band (8mm), but should order as true to size. If you are between sizes, recommend going down to the next closest size for His band (8mm).
►Ceramic rings are a very durable wedding ring option. They are made from jewelry-grade ceramic, also known as titanium carbide, and not from the more familiar (and fragile) ceramic used to craft various household items. Ceramic rings are the same color inside and out; therefore, they are not plated and will not lose its color throughout its wear.
✓ 100% Cobalt-Free
✓ Hypoallergenic
✓ Comfort Fit
✓ Free Ring Box
✓ Free Shipping within the US
✓ Ready to ship next business day
►Your ceramic ring will not turn green itself and will not cause your skin to turn green.
►Free USA domestic shipping.
►Delivery Time: 2-5 business days
►Packaged in a gift ready ring box.
►We recommend that you confirm appropriate sizing for rings. Please contact us if you need help sizing.
| Metals | Ceramic |
|---|---|
| Inlay | Black Fire Opal |
| Colors | Black |
| Band widths | 4mm · 8mm |
Free US shipping on every order — and if you need it fast, 2-day and overnight options are right at checkout.
Wrong size? No stress. Just reach out and we'll get your exchange or return moving. We'll send you a prepaid return label to make it easy, and we turn things around within about 3 business days of your rings reaching us.
Engraved sets are made just for you, so they can't be returned — but if the size isn't right, we'll take 40% off a replacement so you're not starting over.
A quick heads-up: international orders are final sale. Questions about anything? Check the full Returns & Exchanges policy, or just message us — we're happy to help.
Both rings — his and hers, each in the size you choose. One purchase covers both of you, shipped together in a gift-ready ring box with free US shipping.
We do something even better — free size exchanges, on both rings. Instead of cutting and stretching a ring the way traditional resizing does, we simply send a brand-new ring in the right size. If either size is wrong, we make it right, free.
Add names, dates, or coordinates to either band — or both — engraved before your set ships, free (a $30 value). Engraving is custom-made just for you, so engraved sets are final sale, and it adds about three business days.
Black Fire Opal — hand-set and sealed under a protective coating that defends it from water, dirt, and grime. Because the stones settle differently in every channel, no two rings are ever alike.
Most of our designs are also sold individually — the set is simply the best value. If you only need one ring, message us and we'll point you to the matching individual listings.