Diana halo engagement ring in 18k rose gold with an oval lab-grown alexandrite centre stone and diamond accents, front view.

Diana halo engagement ring in 18k rose gold with an oval lab-grown alexandrite centre stone and diamond accents, end-on view showing the setting and band.

Diana halo engagement ring with an oval gemstone centre stone, worn on a hand.

Video showing the Diana halo engagement ring with an oval gemstone centre stone.

DIANA
Alexandrite & Lab Diamond 18k Rose Gold

Name: DIANA - Alexandrite & Lab Diamond 18k Rose Gold
Brand: Lily Arkwright
Price: 2826.0 CHF
Availability: InStock

CHF 2,826.00

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Made to Order For You

Estimated dispatch 15 Nov – 6 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

Diana surrounds an oval lab-grown alexandrite with a halo of lab-grown diamonds. The central gemstone's appearance may vary with the light; the smaller stones offer a consistent visible frame. A plain band keeps the design centred on that changing oval.

Rose gold softens the metal tone beneath the gemstone. The halo tracks the gemstone's length from above and makes the centre easy to read as a separate coloured stone. The band adds no competing diamond detail along its shoulders.

The specification identifies the centre as lab grown and the surrounding halo stones as G/H SI quality lab diamonds. It also gives a 2.50mm band. These details distinguish the coloured oval from its diamond frame and the unadorned lower band.

The 6 listed oval sizes run from 7x5mm to 12x10mm, with the largest marked made to order. The option weights refer to the central gemstone, so its scale can be compared separately from the halo that surrounds it.

The central oval may take on different appearances as the lighting changes. The lab-diamond halo holds a steady pale outline around it, making that difference more noticeable.

Alexandrite can change in different lighting, while Diana's lab-diamond border retains its clear oval frame.

Specification

Centre Stone: Lab grown Alexandrite. Additional sizes available upon request.
Halo Stones: Lab Diamond G/H SI Quality
Metal: 18K rose gold
Setting: Halo setting
Band width: 2.50mm
This piece has been certified in accordance with the hallmarking Act 1973

Images & Videos

Model Hand Image: Diana Oval 2.00ct
Product Video: Diana Oval 2.00ct
Models wears a ring size UK M

Finance Options

iFrame

More information View images

Shipping

Lily Arkwright are proud to offer Free worldwide delivery & returns.

Postage Timescales:

UK: Next day delivery

Europe: 2-5 days delivery

US & Canada: 3-5 days delivery

Rest of World: 3-5 days delivery

All parcels are shipped via our nominated couriers and are fully insured to your postal address, every parcel requires a signature upon delivery. No customs, duty or tariffs are payable for any deliveries worldwide. The price you see, is the price you pay with no additional fees.

Returns

All Return Postage is FREE

When sending items back please ensure you obtain proof of postage. When returning your order please request a RETURNS NUMBER (RN) by emailing hello@lilyarkwright.com.

We offer a 50-day money-back guarantee from the date of delivery. All returned items must be in an unworn condition with all original packaging and relevant certificates.

We do not accept returns or exchanges for engraved, personalised, bespoke/made to order items and purchases over £15,000 unless faulty or otherwise agreed in writing. For more information please view our Delivery & Return info.

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

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Matching Wedding Band

We recommend you match the Diana Engagement Ring with the Cecelia 2.20mm 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.