Blood-red fire in an architectural silhouette. This coffin cut ruby engagement ring centers a 2.1-carat AAA lab-grown ruby — a genuine ruby with deep, saturated color — in a striking elongated coffin cut, cradled in a six-prong basket. Clusters of natural black onyx trinities flank each shoulder, turning a classic red-stone ring into something sharper, darker, and unmistakably modern. Cast in 14K rose gold vermeil over sterling silver 925, it is built for the bride who wants a ring nobody else is wearing.
Genuine lab-grown ruby
Coffin cut · 2.1ct · 7×10mm
Natural black onyx trinities
Six-prong basket
14K rose gold vermeil
Free velvet gift box
The genuine lab-grown ruby
The center stone is a AAA-grade lab-grown ruby — a real ruby, the red variety of corundum, chemically and physically identical to a mined one. It carries the same deep, blood-red color that defines fine ruby, the same crystal structure, and the same Mohs 9 hardness, second only to diamond, which makes it superbly suited to daily engagement-ring wear. Grown rather than mined, it delivers vivid, consistent saturation at a full 2.1 carats without the natural-ruby price tag, and with clean, ethical origins. Ruby is the July birthstone and the 15th and 40th anniversary gem, giving the ring meaning far beyond its drama.
The coffin cut and setting
The coffin cut is an elongated hexagonal step cut — geometric, architectural, and strikingly different from a standard oval or pear. Measuring 7 × 10 mm, the stone lies long on the finger, and a six-prong basket holds its elongated shape securely from every angle. The clean rose gold metalwork stays deliberately quiet so the contrast between red fire and black shadow does all the talking. It is a shape with real symbolism behind it, at home among alt-bridal and gothic engagement rings.
The natural black onyx accents
Six natural black onyx accents cluster three to a side, set as small trinities of pear and round cuts at each shoulder. Black onyx is a natural chalcedony with a deep, opaque, velvet-black surface — the perfect foil to the ruby’s red fire. The onyx is genuine and naturally dark, never dyed, and its shadow makes the center stone burn brighter. The red-and-black story runs through our black onyx engagement rings and black onyx couples rings.
Meaning and symbolism
Ruby has stood for passion, vitality, and courageous love for millennia — the boldest red in the gem world, worn by royalty as a talisman of power and devotion. Black onyx has been used in rings and amulets since ancient Greece, traditionally tied to strength and protection. Together they make a ring about fierce, protective, wholehearted love. To read more about the dark stones at its shoulders, see our journal on black onyx meaning, our black gemstones guide, and our guide to black rings for women.
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.
Specifications
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Center stone Genuine lab-grown ruby, AAA grade, coffin cut, 7 × 10 mm (approx. 2.1 ct)
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Accents Six natural black onyx (pear and round trinities)
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Setting Six-prong basket with three-stone shoulder clusters
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Metal 14K rose gold vermeil over sterling silver 925
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Profile Comfort fit
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Hardness Ruby 9 Mohs, onyx approx. 6.5-7 Mohs
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Birthstone July (ruby)
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Sourcing Ethically grown ruby, ethically sourced onyx
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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, reach out and we will help, with resizing available from a modest fee. Ruby is exceptionally hard-wearing, but clean the ring gently with warm, soapy water and a soft brush, and store it in the velvet box away from harder jewelry so the onyx trinities and prongs stay crisp. Remove it before impact-heavy activities to keep the setting pristine.
Frequently asked questions
Is the ruby real?
Yes. It is a genuine lab-grown ruby — a real ruby, the red variety of corundum, chemically and physically identical to a mined ruby, with the same blood-red color, the same crystal structure, and the same 9 Mohs hardness. It was grown rather than mined, which gives it clean, ethical origins.
Is the black onyx natural?
Yes. All six onyx accents are natural black onyx, a natural chalcedony with a deep, opaque, velvet-black surface. It is genuine and naturally dark, never dyed.
Why choose a lab-grown ruby?
A lab-grown ruby is the same real ruby in every meaningful way — identical hardness, color, and composition — with vivid, consistent saturation and clean, ethical origins. It lets you wear a full 2.1-carat AAA-tier center stone without the natural-ruby price tag.
What is rose gold vermeil?
Rose gold vermeil is real 14K rose gold over sterling silver 925 — the warm, golden look of rose gold at an easier price. If you would like gold all the way through, the same design is also available in solid gold.
What is a coffin cut?
The coffin cut is an elongated hexagonal step cut — a geometric, architectural shape that lies long on the finger, quite different from a round, oval, or pear. It is the defining feature of this ring’s bold, modern silhouette.
How big is the center stone?
The coffin-cut ruby measures about 7 × 10 mm, roughly 2.1 carats. Its elongated shape gives it real presence and length on the finger.
Is ruby durable enough for daily wear?
Exceptionally so. Ruby is rated 9 on the Mohs scale, second only to diamond, making it one of the most scratch- and impact-resistant stones you can wear every day. The six-prong basket holds the elongated cut securely.
Is this a good July birthstone gift?
Yes. Ruby is the traditional July birthstone and the 15th and 40th anniversary gem, so the ring carries personal meaning as a proposal, birthday, or milestone piece.
What does the design symbolize?
Ruby has long symbolized passion, vitality, and courageous love, while black onyx has been tied to strength and protection since antiquity. Together they make a ring about fierce, protective, wholehearted love.
Who is this ring for?
It is made for anyone drawn to gothic, alt-bridal, or dark-romantic styling over a traditional white solitaire — lovers of red-and-black color stories and dramatic, one-of-a-kind statement jewelry.
Can this ring be resized?
Yes, within reason. We recommend ordering your correct size where possible; if you need guidance, contact us before ordering and resizing starts from a modest fee.
Are the stones ethically sourced?
Yes. The ruby is ethically grown in a lab, and the natural black onyx accents are ethically sourced and conflict-free.
Does it arrive gift-ready?
Yes. Every order ships in a free luxury velvet gift box, backed by our lifetime warranty — ready for a proposal or to give as a keepsake.
