Posy Lab-Grown Alexandrite Ring

$148.00

Posy Lab-Grown Alexandrite Ring

$148.00

Shipping calculated at checkout.

9 reviews

Genuine lab-grown color-change alexandrite

Solid 925 sterling silver setting

Lifetime service — we stay behind every piece

Bespoke gemstone options on this setting — just ask

Free shipping worldwide

Easy returns — see our return policy

Add the code at cart or checkout.

Ring size (US) 5 5.5 6 6.5 7 7.5 8

Measure a ring you already wear, then compare it with the chart below.

Available sizes & international conversion

US	UK	EU	Finger circumference
5	J 1/2	49	49.3 mm
5.5	K 1/2	50	50.6 mm
6	L 1/2	52	51.9 mm
6.5	M 1/2	53	53.1 mm
7	N 1/2	54	54.4 mm
7.5	O 1/2	56	55.7 mm
8	P 1/2	57	57.0 mm

View & Download Complete Size Guide

Not sure between two sizes?

Email us before you order and we’ll help you choose: hello@heiracle.com

Our existing return policy applies. Return shipping is paid by the customer.

Special requests

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Real Stone Video

A Real Look at Our Alexandrite

Seeing Is Believing.

Think our price is too good to be true for real lab-grown alexandrite? Watch the actual stone in motion.

From crystal growth and precision cutting to jewelry setting, the process is handled directly through our own supply chain, without unnecessary middle layers. Photos can be carefully styled, but video gives you a more honest view of the gemstone’s real color, brilliance, and response to light.

Direct Process Crystal growth, precision cutting, and jewelry setting are managed directly through our supply chain.

Custom Service Custom gemstone sizes, shapes, cuts, and finished jewelry are available.

We Can Offer More Than You Might Imagine

Lab-Grown Alexandrite Rings Explore finished rings set with our lab-grown alexandrite. Standard-Size Loose Alexandrite Shop ready-cut loose gemstones in our currently available standard sizes.

Custom Consultation Tell us the gemstone, size, cut, or jewelry piece you would like us to create.

Please email us at hello@heiracle.com about any gemstone or jewelry piece you would like to customize.

In addition to lab-grown alexandrite, we also work with more varieties of lab-grown gemstones. Many of these materials and services have not yet been published on our website as our online collection is still growing.

Contact our team for custom gemstone sizes, shapes, precision cutting, jewelry setting, or any other support you may need. We will be happy to discuss the possibilities with you.

Email Our Gemstone Team

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We’ve always believed that jewelry should stay with you.

Not just for a moment, but through everyday life — through the days you don’t think about it, and the ones you’ll remember later.

But for something to truly stay with you, it cannot stop at the product.
It also needs to be supported over time.

That’s why we offer lifetime service for every piece.

If parts wear down or need to be replaced, we’ll take care of it for you — you only cover a small shipping cost. And if you’re already placing another order, we’re happy to include it without any additional shipping.

Because in the end, this isn’t just about jewelry.

It’s about creating something you can keep, rely on, and continue wearing — without worry.

If you ever need us, we’re always here at hello@heiracle.com.

Posy Lab-Grown Alexandrite Ring gathers a circle of bright accents around its center stone like a small bouquet in full bloom. The lab-grown alexandrite plays the changing season at its heart — teal green in daylight, warming to plum as the evening lights come on.

The color change gives the little bouquet two moods, fresh and green by day, soft and plummy by night. Light on the finger and low in profile, it wears as sweetly as it looks.

Stone: lab-grown alexandrite, approx. 0.85 ct, color-change from teal green to plum
Cut & size: Oval cut, 6mm x 5mm (approx. 0.24" x 0.20")
Setting: 925 sterling silver with white gold (rhodium) plating, nickel-free
Band: closed band, made to your chosen size
Care: keep dry off-wear, wipe with a soft cloth

Every ring in this collection is set in solid 925 sterling silver, finished with white gold (rhodium) plating for a bright, durable surface — and it is nickel-free, so it stays gentle on sensitive skin.

The stone is genuine lab-grown alexandrite: chromium-bearing chrysoberyl with the same chemistry, the same 8.5 hardness, and the same color-change behavior as mined alexandrite — teal green in daylight, plum red under warm evening light.

A little care goes a long way: take your ring off before showers, pools, and workouts, keep it dry, and give it a quick wipe with a soft cloth after wear. Stored dry, the plating keeps its brightness for years — and if it ever dulls, our lifetime service covers re-plating support.

Shipping
Free Standard Shipping — 6–14 Business Days

Express Shipping Available — $10 · 5–8 Business Days

View full shipping policy →

Returns

We offer easy returns — your experience comes first.

Learn more →

During certain Chinese holidays, fulfillment may experience slight delays due to nationwide closures.

If your order is affected, we will reach out within 24 hours after your purchase to inform you clearly and explain the timing.

These pauses are intentional. We believe in supporting the people behind the work — giving our team time to rest and be with their families. In China, moments of reunion are deeply valued, and we choose to honor that.

If you’re happy to keep your order during this time, we’ll make sure it’s worth the wait with a small surprise prepared for you.

Holiday notices will always be shared on our homepage in advance.

We believe in offering a fair and thoughtful price for what we make.

By working closer to the source and reducing unnecessary layers in the supply chain, we are able to keep our pricing more accessible without relying on excessive markups.

At the same time, we do not compromise on materials. We use solid 925 sterling silver and genuine lab-grown alexandrite because long-term wear, safety, and comfort should never be sacrificed.

We also believe that craftsmanship deserves respect. Behind every piece is real work — and we are committed to supporting skilled makers and ensuring they are paid fairly for what they create.

For us, pricing is not about being the cheapest. It is about being honest, sustainable, and worth keeping.

FAQ

Questions, answered.

Is the color change real?

Yes - and it is the whole point. Chromium inside the crystal absorbs different wavelengths under different light, so the same stone reads teal green in daylight and shifts to plum red under warm lamps or candlelight. It is not a coating or a filter; the change is a permanent property of the crystal itself.

Is lab-grown alexandrite real alexandrite?

Chemically, yes. Lab-grown alexandrite is chromium-bearing chrysoberyl - the same composition, the same 8.5 hardness, and the same color change as the mined stone. The only difference is that it grows in a controlled lab over weeks instead of underground over millennia, which is why it costs a fraction of mined alexandrite.

Is it safe for sensitive skin?

Yes. The setting is solid 925 sterling silver with white gold (rhodium) plating and contains no nickel, so it stays gentle on sensitive skin for all-day wear.

How do I care for my ring?

Treat it like fine jewelry: take it off before showers, swimming, and workouts, keep it dry, and wipe it with a soft cloth after wear. Store it separately so the stone does not rub against other pieces. If the plating ever dulls over the years, our lifetime service covers re-plating support.

Can I customize the stone or setting?

Yes. If you are dreaming of a different cut, carat, stone, or setting, we offer custom service - email hello@heiracle.com with your idea and we usually reply within one business day.

Real footage — natural & UV light

The Alexandrite Effect

One stone. Two lives.

Alexandrite is one of the rarest optical phenomena in gemology. The same crystal reads teal-green under daylight, then turns raspberry-purple under candlelight and warm indoor lamps. Nothing is coated, nothing is heated on demand — the change is written into the crystal itself.

By day — a quiet teal green.

Under sunlight or cool white light, chromium inside the crystal absorbs the warm wavelengths and lets the greens through. Understated enough for the office, a walk, an ordinary Tuesday.

By night — raspberry and violet.

When the light turns warm — dinner, candles, lamplight — the same stone shifts toward purple-red. The ring you wore all day arrives at the evening as something else entirely.

Emerald by day, ruby by night — that is how alexandrite has been described since it was first documented in the 1830s. Tap the light to watch yours change.