Royal blue against the deepest black — a gothic-bridal contrast built to be noticed. This black onyx engagement ring centers an emerald-cut lab-grown blue sapphire framed by natural black onyx accents in trillion, round and leaf-bezel cuts, all on an art deco setting in solid 925 sterling silver with a rhodium finish. Vintage in spirit, modern in execution, and unapologetically dark.
Natural black onyx accents
Lab-grown blue sapphire
Emerald cut · 8x6mm · 1.4ct
Art deco leaf-bezel frame
Solid 925 sterling silver
Rhodium finish
Natural black onyx accents
The dark heart of the design is its natural black onyx — genuine, naturally mined chalcedony with a deep, glossy jet-black color, never dyed or simulated. It appears in a deliberate arrangement: two trillion cuts flanking the center stone, two round accents set within leaf-shaped silver bezels at the crown and base, and a cluster of six round accents flowing down the shoulders. That much true black around a blue center is what creates the ring's signature gothic-bridal look — no white-diamond halo, just contrast. Explore more of the palette in our black onyx engagement rings collection, and read the lore in our guide to black onyx meaning.
The lab-grown blue sapphire center
The center stone is a lab-grown blue sapphire — and that means a genuine sapphire. It is real corundum, the same mineral as mined sapphire, with the same chemistry, the same deep-royal ceylon-blue color and the same exceptional hardness of 9 on the Mohs scale, second only to diamond. Lab-grown simply describes where the crystal formed: in a controlled environment rather than underground. It is not a simulated or imitation stone; it is sapphire through and through, making it superbly durable for daily wear on an engagement ring. At 8.0 x 6.0 mm and roughly 1.4 carats, the emerald cut spreads wide and reads larger than a comparable round.
The emerald cut
An emerald cut is a rectangular step cut with truncated corners and long, parallel facets — chosen when a stone's color is the point and sparkle should not compete with it. For a sapphire this saturated, that is exactly right: the deep royal blue reads cleanest in a long, open rectangle, and the silhouette visually elongates the finger. It is the calm, confident foundation the black onyx accents build around.
The art deco leaf-bezel framework
The setting is pure art deco — the 1920s language of geometry, symmetry and small architectural detail rather than freeform ornament. You see it in the rectangular emerald cut, the mirrored placement of accents across the cardinal points and shoulders, and the leaf-shaped silver bezels at the crown and base that read as delicate lotus or fleur-de-lis flourishes. The overall silhouette feels vintage and heirloom without tipping into costume — right at home among our gothic engagement rings. To see where the aesthetic comes from, our feature on Victorian gothic engagement rings is a rich read.
Solid sterling silver with a rhodium finish
The ring is solid 925 sterling silver — 92.5% pure silver throughout, not plated base metal — finished with rhodium, the same precious metal used on fine white gold. That rhodium layer gives the band a bright white-gold-style luster and adds scratch and tarnish resistance, and the white-metal tone is the perfect backdrop for the royal blue and deep black to read at their sharpest. Genuine 925 sterling silver will not turn your skin green; that reaction comes from low-quality base metals, not real sterling.
How to wear it
Built as an engagement ring, it doubles as a serious promise ring, a September birthstone piece (sapphire is the September stone), or a bold right-hand statement. It stacks beautifully with a curved or chevron contour wedding band — the cardinal-point onyx at the base of the setting gives a contour band a natural nesting line. Couples who want the theme across two hands can browse our black onyx couples rings, and for wedding-day styling our edit of gothic wedding rings and dark-romance styles is full of ideas.
Specifications
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Metal Solid 925 sterling silver with rhodium finish
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Center stone Lab-grown blue sapphire (genuine sapphire), emerald cut
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Center size 8.0 x 6.0 mm (approx. 1.4 ct)
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Center hardness 9 on the Mohs scale
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Center color Deep royal blue (ceylon tone)
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Accents 10 natural black onyx (2 trillion, 2 cardinal round, 6 shoulder round)
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Setting Art deco, four double-prong claws, leaf-bezel detail
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Birthstone September; 5th and 45th anniversaries
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Sourcing Lab-grown sapphire (no mining); natural onyx ethically sourced
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Included Free luxury velvet gift box & lifetime warranty
Sizing & care
True to size. If you do not know your size, message us before ordering and we can send a complimentary ring sizer; resizing is available starting from a modest fee. Treat the ring like fine jewelry: remove it before swimming, cleaning, gardening or applying lotions and perfumes, and avoid impact on hard surfaces — the corners of the emerald cut and the points of the trillion onyx are the most vulnerable spots. Clean with warm water and a soft brush, skip ultrasonic cleaners on the prongs, and a soft cloth keeps the rhodium finish bright and the blue-and-black contrast crisp.
Frequently asked questions
Are the black accent stones natural?
Yes. All ten black accents — two trillion cuts, two round cardinal accents and six round shoulder stones — are natural black onyx, naturally mined and ethically sourced. They are not dyed or simulated.
Is the blue sapphire real?
Yes — it is a genuine lab-grown blue sapphire. Lab-grown sapphire is real sapphire (the same corundum mineral, the same hardness of 9 on the Mohs scale, the same optics as mined sapphire); the only difference is that the crystal was grown under controlled conditions rather than mined. It is not a simulated substitute.
What is the difference between lab-grown and simulated sapphire?
A simulated sapphire is a different stone entirely (usually cubic zirconia or glass) that only looks like sapphire. A lab-grown sapphire is sapphire — same chemistry, same hardness, same color saturation. This ring uses genuine lab-grown sapphire at the center.
Are the black accents black diamonds?
No — the black accents are natural black onyx, not black diamond. We are explicit about this so the listing is honest. If you would prefer real black diamond accents on a solid 14K gold version, message us before ordering for a quote.
How big is the center sapphire?
8.0 x 6.0 mm emerald cut, approximately 1.4 carats. Emerald cuts spread wider than they are deep, so the stone reads larger on the finger than a 1.4ct round brilliant would, and the rectangle visually elongates the finger.
How durable is this ring for daily wear?
Very. Sapphire is 9 on the Mohs scale, second only to diamond, so the center stone is superbly durable. The onyx accents are around 6.5 to 7. The main caution is impact on the emerald-cut corners and the pointed tips of the trillion onyx, which can chip on a sharp knock.
Will sterling silver turn my finger green?
No. Genuine 925 sterling silver does not turn skin green. The ring is solid sterling silver throughout, finished with rhodium for brightness and tarnish resistance. Skin reactions come from low-quality base metals, not real 925.
What does the rhodium finish do?
Rhodium is a platinum-family metal applied over sterling silver as a thin finishing layer. It adds scratch and tarnish resistance and preserves a bright white-metal tone — the ideal backdrop for the royal blue sapphire and deep black onyx contrast.
What does the art deco style mean here?
Art deco is a 1920s aesthetic of geometry, symmetry and small architectural detail. You see it in the rectangular emerald cut, the mirrored accent placement across the cardinal points and shoulders, and the leaf-shaped silver bezels that read as lotus or fleur-de-lis flourishes.
Will this stack with a curved or contour wedding band?
Yes. The cardinal-point onyx at the base of the setting gives a curved or chevron contour band a natural nesting line below the center stone. Pair it with sterling silver, or contrast with a 14K rose or yellow gold contour band.
Can I wear this as a promise or right-hand ring?
Absolutely. The 1.4ct center stone and deliberate gothic-bridal construction give it the weight of a serious commitment piece, and it also works beautifully as a statement right-hand ring.
Is sapphire a meaningful engagement stone?
Very. Sapphires have been used in engagement rings for centuries and are traditionally associated with wisdom, loyalty and faithfulness. As the September birthstone, this ring also makes a natural birthday or 5th or 45th anniversary piece.
Are the stones ethically sourced, and what is included?
The lab-grown sapphire requires no mining and is fully traceable, and the natural black onyx accents are ethically sourced and conflict-free. Every order ships with a free luxury velvet gift box, a care card and our lifetime warranty.
