Midnight, cut into an oval. This black onyx engagement ring centers a deep, glossy jet-black onyx in a smooth oval cabochon, lifted on a vintage-inspired band that glitters with simulated diamonds. Crafted in solid 925 sterling silver with a rhodium finish, it is a confident, celestial-leaning alternative for anyone who finds classic clear solitaires a little too expected.
Natural black onyx
Oval center stone
Simulated diamond band
Solid 925 sterling silver
Rhodium finish
Gothic & celestial
The natural black onyx
The center is a natural black onyx — a genuine chalcedony celebrated for its dense, opaque, jet-black color and mirror-glossy polish. It sits around 6.5–7 on the Mohs scale, a firm and wearable hardness, and its saturated darkness gives the ring a bottomless, night-sky quality that draws the eye straight to the finger. The oval shape softens the drama just enough to feel timeless. If the deep palette speaks to you, explore the full black onyx engagement rings collection, and read why the stone resonates so deeply in our guide to black onyx meaning.
A vintage-inspired band
The band takes its cues from antique jewelry, with sparkling simulated diamonds (cubic zirconia) lining the shoulders in a delicate contrast that makes the onyx read even richer. It is a bright, budget-friendly way to add classic engagement-ring shimmer without competing with the darkness at the center. Prefer a lab-grown diamond or moissanite upgrade? Message us — most of our designs can be tailored to suit.
Gothic, celestial, alternative
With its inky center and star-bright accents, the ring reads equal parts gothic and celestial — a natural fit for anyone drawn to dark-romantic or night-sky aesthetics. It sits comfortably among our gothic engagement rings, and for couples who want to carry the theme across two hands, our black onyx couples rings offer matching companions. For styling ideas, our edit of gothic wedding rings and dark-romance styles is full of inspiration.
Solid sterling silver with a rhodium finish
The ring is crafted in solid 925 sterling silver and finished with rhodium — the same precious metal used on fine white-gold jewelry. That rhodium layer gives the silver a bright, mirror-white luster and adds a protective shield that helps resist tarnish and everyday scratches, keeping the metal looking freshly polished. It is the detail that lets a sterling silver ring wear like something far more expensive, and genuine 925 will not turn your skin green.
What black onyx symbolizes
Long regarded as a stone of protection, grounding and inner strength, black onyx has been worn for centuries as a talisman for resolve and steady focus — which is exactly why it has become such a meaningful choice for a non-traditional engagement or promise ring. It is an emblem for a love that stays composed and rooted through anything. To see where its dramatic, romantic styling comes from, our feature on Victorian gothic engagement rings is a rich starting point.
Specifications
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Metal Solid 925 sterling silver with rhodium finish
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Center stone Natural black onyx, oval cut (approx. 5.0 x 7.0 mm)
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Center hardness Mohs ~6.5–7
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Accents Simulated diamonds (cubic zirconia)
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Band width Approx. 1.7 mm
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Style Vintage, gothic, celestial-inspired
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Best for Engagement, promise, anniversary gift
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Sourcing Ethically sourced, conflict-free stones
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Included Free luxury velvet gift box & lifetime warranty
Sizing & care
Choose your size at checkout. If you are between sizes or unsure, we are happy to help, and if the fit is not quite right, resizing is available and starts from a modest fee. To keep the onyx and rhodium finish at their brightest, remove the ring before showering, swimming or applying lotions and perfumes, and store it in the velvet box when not worn. A soft, dry cloth restores the shine. With gentle care, this is a ring made to be worn every day.
Frequently asked questions
Is the black onyx natural?
Yes. The center is natural black onyx, a genuine form of chalcedony known for its dense, opaque, deep jet-black color and glossy polish. It is a real natural stone, not simulated.
What shape is the center stone?
It is a smooth oval, cut to show off the onyx's mirror-glossy surface. The oval silhouette flatters the finger and keeps the look timeless while the deep black provides the drama.
What are the sparkling accent stones?
The band is set with simulated diamonds (cubic zirconia) for a crisp line of white sparkle that contrasts beautifully with the onyx. If you would prefer a lab-grown diamond or moissanite upgrade, reach out and we will tailor it for you.
How durable is black onyx?
Black onyx sits around 6.5 to 7 on the Mohs scale, making it well suited to everyday wear with normal care. Avoid hard knocks and remove the ring for rough activities to keep the polish pristine.
What metal is it made from?
Solid 925 sterling silver, finished with rhodium for a bright white luster and extra protection against tarnish and scratches.
What does the rhodium finish do?
Rhodium is the same precious metal used to finish fine white gold. It gives the silver a mirror-bright, white-gold-like shine and adds a protective layer that helps the ring stay looking freshly polished.
Will it turn my finger green?
No. Genuine 925 sterling silver does not turn skin green; that reaction is associated with low-quality or fake metals, not the real sterling silver used here.
Can I wear it as an engagement ring?
Absolutely. Its deep onyx center and vintage band make it a striking non-traditional engagement ring, unique promise ring or meaningful anniversary gift for anyone who loves darker, celestial-leaning jewelry.
What does black onyx symbolize?
Black onyx is long associated with protection, grounding and inner strength, which makes it a meaningful choice for a commitment ring — an emblem of steady, composed, rooted love.
How do I care for the ring?
Remove it before showering, swimming or applying lotions and perfumes, store it in the velvet box, and buff with a soft dry cloth to restore shine. Gentle care keeps the onyx and rhodium finish luminous.
What size should I order?
Select your ring size at checkout. If you are unsure or between sizes, contact us for guidance. Resizing is available and starts from a modest fee.
Are the stones ethically sourced?
Yes. All of our stones are ethically sourced and conflict-free, so you can wear the ring 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.
