Regal, elongated and unmistakably romantic, the Adeline marquise-cut tanzanite ring lengthens the finger with a slender navette silhouette that catches light from tip to tip. A deep violet-blue simulated tanzanite sits in a vintage-inspired floral setting, framed by shimmering simulated diamond accents and cast in solid 925 sterling silver with a bright rhodium finish. It is a December-birthstone engagement ring designed to feel like an heirloom from the very first wear.
Marquise-cut tanzanite
Solid 925 sterling silver
Rhodium finish
Vintage floral setting
December birthstone
Free velvet gift box
A vintage silhouette made for the spotlight
The marquise cut has crowned royal jewelry boxes for centuries, and here it takes center stage. Its pointed oval shape stretches gracefully across the finger, creating the illusion of length while maximizing the surface area of the stone so the violet color reads bold and full. A delicate floral gallery cradles the gem, softening the geometry with an antique, feminine touch. If you are drawn to statement stones with old-world character, our wider tanzanite engagement rings collection carries the theme through marquise, oval and cushion silhouettes.
The simulated tanzanite center
The heart of the ring is a hand-set simulated tanzanite, engineered to capture the coveted violet-blue glow that made the real gem one of the most celebrated discoveries of the twentieth century. Measuring a generous 5.0 x 10.0 mm at roughly one carat, it delivers rich, saturated color and lively brilliance without the fragility or single-source scarcity of the mined stone. To explore the lore and symbolism behind the color, our guide to tanzanite meaning is a lovely place to begin.
Brilliant simulated diamond accents
Framing the marquise are hand-set simulated diamonds — a crisp, budget-friendly flash of white sparkle that makes the violet-blue center glow even deeper. Their bright fire echoes the shape of the floral setting and adds classic engagement-ring shimmer without overwhelming the star of the design. It is the kind of detail that lets a sterling silver ring wear like something far more expensive.
Solid sterling silver with a rhodium finish
The Adeline is crafted in solid 925 sterling silver and finished with a layer of rhodium — the same precious metal used on fine white-gold jewelry. That rhodium finish gives the band a bright, mirror-white luster and adds a protective shield that helps resist tarnish and everyday scratches, keeping the silver looking freshly polished. It is also hypoallergenic and nickel-free, so it wears comfortably day after day.
What tanzanite symbolizes
As the modern December birthstone, tanzanite is associated with transformation, truth and calm clarity — a fitting emblem for a promise made and a new chapter begun. Its regal violet has long been linked to dignity and intuition, which is part of why it feels so at home in a vintage silhouette. For gift-givers marking a winter proposal or birthday, our complete December birthstone guide offers thoughtful context, and you will find more violet pieces across our tanzanite jewelry range.
Specifications
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Metal Solid 925 sterling silver with rhodium finish
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Center stone Simulated tanzanite, marquise cut
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Stone size 5.0 x 10.0 mm, approximately 1 ct
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Hardness Mohs 8, suited to everyday wear
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Accents Simulated diamond (CZ)
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Band width Approximately 1.7 mm
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Setting Vintage-inspired floral gallery
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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 isn't quite right, resizing is available and starts from a modest fee. To keep the stone and rhodium finish at their brightest, remove the ring before showering, swimming or applying lotions, and store it in the velvet box when not worn. A soft, dry cloth restores the shine beautifully. With gentle care, this is a ring made to be worn every day.
Frequently asked questions
Is the tanzanite natural?
The center is a simulated tanzanite, engineered to capture the coveted violet-blue color with vivid saturation and lively sparkle. It offers consistent color and everyday resilience while keeping the ring beautifully affordable.
What is the marquise cut and why choose it?
The marquise is an elongated, pointed oval. It elongates the finger and shows off more surface area than many cuts of the same weight, so the violet color reads bold and full. It is a classic, regal silhouette with vintage character.
How big is the center stone?
The marquise tanzanite measures 5.0 x 10.0 mm, roughly one carat — a generous, eye-catching size that still sits comfortably on the finger.
What are the accent stones?
Hand-set simulated diamonds frame the setting, adding a crisp flash of white sparkle that makes the violet-blue center glow even deeper. They provide classic engagement-ring shimmer at a friendly price.
What metal is the ring made from?
Solid 925 sterling silver, finished with rhodium for a bright white luster and extra protection against tarnish and scratches. It is hypoallergenic and nickel-free.
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.
Is it durable enough for daily wear?
Yes. The simulated tanzanite sits at Mohs 8, which is well suited to everyday wear. As with any fine ring, avoid hard knocks and remove it for rough activities to keep it pristine.
Is this a good December birthstone gift?
Absolutely. Tanzanite is the modern December birthstone, making this ring a meaningful choice for a winter birthday, holiday gift or December proposal.
Will the silver turn my finger green?
No. The rhodium finish and solid 925 sterling silver resist tarnish and will not discolor your skin with normal care.
Can it be resized?
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 your 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.
Where can I see more tanzanite designs?
Explore the full gemstone engagement rings collection for more violet and colored-stone styles, or read the history of gemstones for the stories behind the stones.
