One ring, two moods. The Astra Oval Alexandrite Engagement Ring is built around a gemstone that quietly changes its mind: a lab-grown alexandrite that reads cool purple in daylight and warms to soft pink under lamplight and candle glow. Set in a clean oval solitaire and wrapped in 14K rose gold vermeil, it is a color-changing proposal ring for someone who would rather wear a little magic than a conventional white diamond.
Color-shift alexandrite
14K rose gold vermeil
Oval solitaire
June birthstone
Lab-grown center stone
Free velvet gift box
A gemstone that changes with the light
Alexandrite is famous for one unforgettable trick, and in this ring you can see it happen in real time. Step into daylight and the oval center glows a cool violet-purple; move into incandescent light, candlelight or a warm restaurant glow and it softens into pink with blue-purple undertones. It is the kind of detail that makes people ask to see your hand twice. If the color play is the reason you are here, our guide to how synthetic alexandrite changes color explains exactly why it happens.
An oval solitaire, framed in rose
The 5.0 x 7.0 mm oval sits in a slim prong setting that lets light pour through the stone from every angle, so the shift never gets lost. A whisper of cubic zirconia along the setting adds a crisp, budget-friendly flash of white that flatters the alexandrite without competing with it. The elongated oval also flatters the finger, drawing the eye up the hand. Explore more of the silhouette in our alexandrite engagement rings collection, or browse the wider alexandrite jewelry range to match a set.
Real, lab-grown alexandrite
Natural alexandrite is one of the rarest gems on earth, which is why almost every alexandrite ring you will ever see uses a lab-grown stone. Ours is genuine lab-grown alexandrite: chemically the same chrysoberyl as mined material, grown in a controlled setting so the color-change is vivid and consistent, and kind to both your budget and the planet. At 8.5 on the Mohs scale it is genuinely hard-wearing for everyday life. If you are weighing lab-grown against mined, our honest breakdown of lab-grown vs natural alexandrite is worth a read.
A meaningful June birthstone
As a June birthstone, alexandrite carries a lovely symbolism of balance, luck and transformation, which makes it a heartfelt choice for an engagement, a promise or a milestone birthday. Because no other popular gem behaves quite like it, an alexandrite ring feels personal in a way a standard stone rarely does. Curious how it stacks up against another color-rich favorite? See our comparison of alexandrite vs sapphire. You will also find it beautifully paired with matching styles in our alexandrite couples rings.
Specifications
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Metal 14K rose gold vermeil (real gold over sterling silver 925)
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Center stone Lab-grown alexandrite, color-changing
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Shape Oval, 5.0 x 7.0 mm (approx. 0.75 ct diamond equivalent)
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Hardness 8.5 on the Mohs scale
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Accents Cubic zirconia
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Setting Prong-set oval solitaire
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Band width Approx. 1.7 mm
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Personalization Optional engraving (up to 16 characters)
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Sourcing Ethically sourced, conflict-free stones
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Included Free luxury velvet gift box & lifetime warranty
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.
Sizing & care
Choose your size at checkout. If you are between sizes or unsure, reach out and we will help you get it right, and if the fit needs adjusting, resizing is available and starts from a modest fee. To keep the vermeil glowing and the alexandrite bright, remove the ring before showering, swimming or exercise, keep it away from lotions and fragrance, and store it dry in its velvet box between wears. A soft, dry cloth brings back the shine in seconds.
Frequently asked questions
Does the alexandrite really change color?
Yes, and it is easy to see. The oval center reads cool purple in daylight and shifts to a softer pink with blue-purple tones under incandescent light, candlelight or warm indoor lighting. The intensity varies a little with each light source, which is part of the charm.
Is the alexandrite real?
It is genuine lab-grown alexandrite, the same chrysoberyl as mined alexandrite but grown in a lab for a vivid, reliable color-change at a fraction of the cost. Natural alexandrite is extraordinarily rare, so lab-grown is how nearly every alexandrite ring is made.
What is rose gold vermeil?
Rose gold vermeil is real gold layered over sterling silver 925, so you get the warm, golden look of rose gold at a much easier price. If you would prefer gold all the way through, the same design is also available in solid gold.
What metal is the ring made from?
14K rose gold vermeil: a genuine layer of 14K rose gold over a solid sterling silver 925 base. It gives the ring its warm blush tone against the cool violet of the stone.
What are the accent stones?
Cubic zirconia set near the center, adding a crisp, brilliant white sparkle that frames the alexandrite. It is a bright, budget-friendly way to add classic engagement-ring shimmer.
How big is the center stone?
The oval measures 5.0 x 7.0 mm, roughly a 0.75 ct diamond equivalent in face-up size, a flattering, elongated proportion that lengthens the finger.
Is alexandrite durable enough for daily wear?
Yes. Alexandrite sits at 8.5 on the Mohs scale, making it one of the harder gemstones and well suited to everyday wear with normal care.
Can the ring be engraved?
Yes. You can add a personal engraving of up to 16 characters at checkout, such as a date, initials or a short phrase. Engraved pieces are final sale, so please double-check spelling.
How do I care for it?
Remove it before showering, swimming or exercise, avoid contact with lotions and fragrance, and store it dry in the velvet box between wears. A soft, dry cloth restores the shine beautifully.
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. Our stones are ethically sourced and conflict-free, and the lab-grown alexandrite is an inherently responsible choice.
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.
Can I see other alexandrite designs?
Absolutely. Explore the full alexandrite engagement rings collection and our matching alexandrite couples rings to find your perfect pairing.
