Lulu solitaire engagement ring with a princess-cut lab-grown alexandrite centre stone, front view.

Lulu solitaire engagement ring with a princess-cut lab-grown alexandrite centre stone, end-on view showing the setting and band.

Lulu solitaire engagement ring with a princess-cut gemstone centre stone, worn on a hand.

LULU
Princess Alexandrite 950 Platinum Petite Solitaire Ring

Name: LULU - Princess Alexandrite 950 Platinum Petite Solitaire Ring
Brand: Lily Arkwright
Price: 1174.0 GBP
Availability: InStock

£1,174.00 GBP

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Estimated dispatch 20 Nov – 11 Dec . Need it sooner? Call 0161 537 6773

Complimentary Insured Delivery

Free insured delivery & returns with discreet packaging and 50-day returns.

Lifetime Care

Free lifetime warranty, lifetime diamond upgrade and complimentary 1-year resizing.

Finding Your Ring Size

Unsure which size to order? View our Ring Size Guide

In Lulu, a princess-cut lab-grown alexandrite sits alone above a platinum band. Its square outline gives the centre clear geometry, and the four-prong setting leaves the band uncluttered. This is a coloured gemstone engagement ring built around one centre rather than a cluster or halo.

Platinum gives the mount a pale metal finish. Its plain 1.65mm band supports the four-prong solitaire, without a halo or additional gemstones.

Alexandrite supplies the sole coloured centre in this Lulu variation. The specification identifies it as lab grown, while the square princess cut and simple setting establish the ring's clear geometry. The fine shank and square centre make the proportions easy to read: one gemstone above a slim ring, without layered decoration. The four prongs are part of the specified setting, and the centre is not surrounded by a halo. The coloured stone supplies the design's principal detail.

Size selection runs from 4.0mm through 9.0mm in eight listed variants. The weight in each option belongs to its centre gemstone. Throughout that range, Lulu retains the same four-prong solitaire design, allowing the centre's scale to be chosen independently of extra setting detail.

The alexandrite takes the leading role here, supported by a fine band and a four-prong setting.

Specification

Centre Stone: Lab grown Alexandrite Princess Cut. Additional sizes available upon request.
Metal: 950 Platinum
Setting: 4 prong solitaire, plain mount
Band width: 1.65mm
This piece has been certified in accordance with the hallmarking Act 1973

Images & Videos

Model Hand Image: Lulu Princess Cut Moissanite 6.50mm / 1.50ct
Models wears a ring size UK M

Finance Options

iFrame

More information View images

Shipping

Lily Arkwright is proud to offer free worldwide delivery and returns.

We aim to dispatch most orders within 7–28 days. Selected bespoke designs may take 5–6 weeks.

Estimated delivery times after dispatch:

UK: Next working day
Europe: 2–5 working days
US & Canada: 3–5 working days
Rest of the world: Typically 3–5 working days

All parcels are dispatched through our nominated couriers, fully insured and requiring a signature upon delivery.

Returns

Enjoy a 50-day money-back guarantee with complimentary worldwide return postage on eligible purchases, starting from the date of delivery.

To arrange a return or exchange, please email hello@lilyarkwright.com to request a Returns Number (RN) and return instructions. Please retain proof of postage.

Returned jewellery must be unworn, in its original condition and accompanied by its original packaging and relevant certificates.

Certain engraved, personalised or genuinely bespoke pieces may be excluded from change-of-mind returns, without affecting statutory rights.

For orders exceeding £15,000, the change-of-mind returns period is 14 days rather than 50 days, without affecting your statutory rights.

Please see our Delivery & Returns Policy for full details.

A little bit more sparkle perhaps?

You've found your near perfect Lily Arkwright ring, but there's something missing.

Rather than creating a bespoke ring design, simply select any of our popular ring upgrade packages from pointed prongs to a hidden diamond halo, we've got you covered.

View all upgrades here.

Explore related collections

Alexandrite Engagement Rings (Lab Grown)Solitaire Lab Grown Gemstone Engagement Rings Princess Cut Lab Grown Gemstone Engagement Rings

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Matching Wedding Band

We recommend you match the Lulu Engagement Ring with the Cecelia 1.65mm Wedding Band.

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Certified

ABOUT YOUR CENTRE GEMSTONE

Lab-Grown Alexandrite Engagement Rings: Colour and Design

Lab-grown alexandrite brings a distinctive colour-changing character to an engagement ring. This variety of chrysoberyl can appear bluish-green in some lighting and shift towards purple or reddish tones in others. The strength of the effect varies from stone to stone, so photographs taken in a single light may not show its full appearance.

What Is a Lab-Grown Alexandrite Gemstone?

Laboratory-grown alexandrite has the same essential mineral composition as natural alexandrite but is created in controlled conditions. It is not a diamond or a sapphire. Its changing colour is central to its appeal, particularly when paired with bright accent diamonds that provide a consistent contrast as the centre gemstone changes in different light.

Choosing an Alexandrite Engagement Ring Setting

An oval alexandrite gives a graceful, elongated outline; a round or cushion shape creates a different balance on the hand. A solitaire keeps the focus on the gemstone, while a diamond halo frames its changing colour. Compare the centre stone’s millimetre measurements, the metal tone and the side profile of the setting when choosing a ring for everyday wear.