A little piece of the Southern sky, set for your hand. Cordelia centers a natural Australian opal — an oval cabochon that flickers with rainbow fire — inside a vintage Art Deco frame edged in simulated diamonds. Crafted in warm 14K rose gold vermeil over sterling silver 925, this opal ring wears equally beautifully as an engagement ring, a promise ring, or an October birthstone gift she will keep forever.
Natural Australian opal
14K rose gold vermeil
Art Deco vintage frame
Simulated diamond halo
October birthstone
Free velvet gift box
A vintage Art Deco silhouette
Cordelia takes her cue from the geometry of the 1920s — clean lines, a milgrain-fine frame, and a symmetry that lets the opal sit like the jewel in a crown. It is a design for anyone who loves antique romance but wants it in a rosy, modern metal. If old-world detailing is your language, you will feel at home across our opal engagement rings and the wider world of nature-inspired engagement rings, where each piece is built around a single, characterful stone.
The natural Australian opal
Australia produces the most coveted opals on earth, and this oval cabochon is a genuine natural stone — never dyed, never painted. Its play-of-color comes from microscopic spheres of silica that split light into drifting flashes of blue, green, aqua and gold. Because that internal architecture forms over millions of years, every opal is one of a kind; yours will share the same luminous character as our photos with its own private pattern of fire. You will see that same individuality echoed across our opal jewelry collection. For a full primer on choosing the stone, our opal engagement rings guide walks you through color, cut and setting, and our complete opal guide explores the many faces of the gem.
A frame of simulated diamonds
Encircling the opal, a delicate line of simulated diamonds (crisp, brilliant cubic zirconia) throws a cool sparkle that makes the opal’s warm fire glow even brighter. It is a bright, budget-friendly way to add classic engagement-ring shimmer without competing with the star of the show. Prefer a lab-grown diamond or moissanite halo instead? Message us — most of our designs can be tailored.
What opal symbolizes
Opal has been treasured for centuries as a stone of hope, inspiration and creativity — the Romans called it the queen of gems for holding the colors of every other stone at once. As the October birthstone, it carries a sense of individuality and imaginative spirit, which makes it a heartfelt choice for a proposal or a milestone gift. Curious why so many October babies gravitate to it? Our October birthstone guide tells the story.
Specifications
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Metal 14K rose gold vermeil over sterling silver 925
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Center stone Natural Australian opal, oval cabochon (unique color play per stone)
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Stone size 7.0 mm x 5.0 mm, approx. 0.7 ct
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Origin Australia
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Accents Simulated diamonds (cubic zirconia)
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Style Vintage Art Deco, average band width 2 mm
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Fit Runs true to size
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Sourcing Ethically sourced, conflict-free stones
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Included Free luxury velvet gift box & lifetime warranty
Aquamarise vermeil is real gold over sterling silver 925 — the rich, golden look you love, at a price that makes it easy to say yes. Keep it luminous with a little care: remove before showering, swimming, or exercise, avoid contact with lotions and fragrance, and store dry between wears. Want gold all the way through? The same design is also available in solid gold.
Sizing & care
Choose your size at checkout; Cordelia runs true to size, so your usual fit is a safe bet. If you are between sizes or unsure, reach out — and if the fit is not quite right, resizing is available and starts from a modest fee. To keep the opal at its brightest, give it a gentle wipe with a soft, dry cloth and store it in its velvet box between wears. With that little bit of attention, this is a ring made to be worn and loved every day. You can browse more pairings in our opal couples rings if you would like a matching band.
Frequently asked questions
Is the opal natural?
Yes. Cordelia’s center is a genuine natural Australian opal — never dyed or painted. Its play-of-color forms naturally inside the stone, which is why every opal is unique and yours will look subtly different from the next.
What is rose gold vermeil?
Rose gold vermeil is real 14K gold layered over sterling silver 925. You get the warm, golden look of rose gold at a far easier price than a solid-gold piece. If you would like gold all the way through, the same design is also available in solid gold.
What is the Art Deco frame like?
The opal sits inside a geometric, vintage-inspired frame with fine detailing reminiscent of 1920s jewelry — clean, symmetrical and elegant, so the stone reads as the crown jewel of the design.
What are the accent stones?
A halo of simulated diamonds — bright, brilliant cubic zirconia — frames the opal and adds a crisp sparkle. If you would prefer a lab-grown diamond or moissanite halo, message us and we will tailor it.
Will my opal look exactly like the photos?
It will share the same luminous rainbow character, but the exact pattern of fire is one of a kind — the hallmark of a natural opal. No two are ever identical, so yours is truly unique.
How big is the opal?
The oval cabochon measures 7.0 mm x 5.0 mm, roughly 0.7 ct — a beautifully balanced size that feels present on the finger without overwhelming the dainty Art Deco setting.
Is opal durable enough for daily wear?
Opal sits around 5.5–6.5 on the Mohs scale, so it is a softer gem that rewards a little care. Worn mindfully — off for heavy chores and sports — it makes a wonderful everyday ring, as generations of opal lovers will attest.
How do I care for the ring?
Remove it before showering, swimming or exercise, keep it away from lotions and fragrance, and store it dry in the velvet box. A soft, dry cloth restores its shine beautifully.
Can this ring be resized?
Yes. Choose your size at checkout, and if the fit is not quite right, resizing is available and starts from a modest fee. Contact us and we will guide you.
Is opal the October birthstone?
Yes. Opal is one of October’s birthstones, symbolizing hope, creativity and individuality — which makes Cordelia an especially meaningful October birthday or anniversary gift.
Are the stones ethically sourced?
Yes. All of our stones are ethically sourced and conflict-free, so you can wear Cordelia with complete peace of mind.
Does it arrive gift-ready?
Every order ships in a free luxury velvet gift box and is backed by our lifetime warranty — ready for a proposal or to give as a keepsake.
Can I see other opal designs?
Of course. Explore the full opal engagement rings collection and our opal jewelry range to find the piece that speaks to you.
