Sharp lines, deep shadow, zero excess. This black onyx ring is built around a single elongated hexagon of natural onyx — deep, opaque and glossy jet-black — held in slim prongs on a clean, high-polished sterling silver band. Bold, minimal and unapologetically dark, it is a gothic engagement ring and everyday statement piece for anyone who wants architecture on the finger rather than sparkle.
Natural black onyx
Elongated hexagon cut
Minimalist prong setting
Solid 925 sterling silver
High-polish rhodium finish
Gothic geometric
The hexagon black onyx
The center is a striking natural black onyx cut into a sharp, elongated hexagon roughly 6.0 x 12.0 mm and around 2.3 carats — a real presence on the hand. Onyx is a natural chalcedony prized for its dense, opaque, deep glossy jet-black color, and the six-sided geometry turns that darkness into something architectural and modern. At about 6.5–7 on the Mohs scale it is a firm, wearable stone. Explore the wider selection in our black onyx engagement rings collection, and see why the stone endures in our overview of black gemstones.
Minimalist geometric setting
Sleek prongs frame the hexagon without distraction, so the eye goes straight to the symmetry, balance and shadow of the stone. The polished band stays deliberately clean, letting the strong geometric silhouette carry the whole design. It is a look that sits naturally among our gothic engagement rings — strong, monochrome and quietly powerful. Couples who want the theme on both hands can browse our matching gothic couple rings.
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 band a bright, high-polished white luster and adds a protective shield against tarnish and everyday scratches, so the crisp lines stay looking freshly cut. Genuine 925 sterling silver will not turn your skin green; that reaction comes from low-quality metals, not the real silver used here.
Dark aesthetics, architectural design
This ring is defined by strength, simplicity and shadow — made for those who walk their own path and want a statement without excess. The hexagon is a favorite of minimalist and geometric jewelry lovers, and the deep onyx gives it unmistakable gothic edge. For more on how to style dark rings and what they signify, our edit on black rings for women is a great starting point, and our guide to black onyx meaning explains the symbolism of protection and grounded strength behind the stone.
Specifications
-
Metal Solid 925 sterling silver with high-polish rhodium finish
-
Center stone Natural black onyx, hexagon cut (approx. 6.0 x 12.0 mm, ~2.3 ct)
-
Center hardness Mohs ~6.5–7
-
Setting Minimalist prong, geometric
-
Style Gothic, architectural, monochrome
-
Fit True to size
-
Best for Engagement, promise, statement
-
Sourcing Ethically sourced, conflict-free stone
-
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. Black onyx is a natural gemstone, so protect it from hard impact: remove the ring before heavy activity or chemical exposure, store it in a dry, soft-lined box when not worn, and buff with a soft, dry cloth to restore shine. With mindful care, it wears beautifully 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 is the hexagon cut?
It is an elongated six-sided cut, roughly 6.0 x 12.0 mm here, that turns the deep onyx into a bold, architectural shape. The geometry gives the ring a modern, gothic presence while staying clean and minimalist.
How large is the center stone?
The hexagon onyx is approximately 6.0 x 12.0 mm and around 2.3 carats, giving it a strong, elongated presence on the finger.
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. Protect it from hard impact 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, high-polished 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 keeps the crisp geometric lines looking freshly cut.
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 bold hexagon onyx center makes it a striking gothic engagement ring, alternative promise ring or statement piece for anyone who prefers dark, architectural design.
Is the setting comfortable for daily wear?
Yes. The minimalist prong setting and smooth, high-polished band are true to size and comfortable for everyday wear with mindful care around hard impacts.
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 or statement ring — an emblem of steady, self-possessed resolve.
How do I care for the ring?
Protect the onyx from hard impact and chemical exposure, remove the ring before heavy activity, store it in a dry, soft-lined box, and buff with a soft, dry cloth to restore shine.
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, and does it arrive gift-ready?
Yes to both. The onyx is ethically sourced and conflict-free, and every ring ships in a free luxury velvet gift box backed by our lifetime warranty — ready for gifting or proposing.
