At Allum & Sidaway, we believe you really can have it all — quality and quantity. We're proud to introduce the newest addition to the A&S family: our Laboratory-Grown Collection. This curated collection brings together timeless elegance and modern style, featuring a hidden halo for a touch of refined radiance. Every design and stone thoughtfully selected by our in-house bespoke team. Each diamond is D colour graded — the highest possible score, imbuing all that a diamond is meant to embody... perfection.

Elongated, dramatic and utterly distinctive — the marquise cut is one of the most striking diamond shapes, and at 1.00ct it makes a confident, elegant statement. Set as a solitaire in 18ct yellow gold, the warm metal tone beautifully complements the brilliance of this laboratory-grown diamond. This laboratory-grown diamond is accompanied by an independent Diamond Grading Certificate. Details below.

Diamond weight: 1.00ct

Diamond colour: D

Diamond cut: Marquise

Setting: Solitaire

Metal: 18ct yellow gold

Can't find the ring size you're looking for? Don't worry, simply enquire direct with us to tailor this ring to your needs.

Delivery

All orders over £100 will be posted to you by Royal Mail special delivery. If your order is placed before 1pm then it will be dispatched the same day. Orders after 1pm will be posted the next day.

All orders under £100 will be £8.00 for Royal Mail special delivery or £4.95 for Royal Mail 1st Class signed for.

Returns

If for any reason you are not happy with your item, then we will be happy to offer a full refund before 21 days from the purchase date. 

If you would like to return any item within the time frame stated above, then please make sure you have the original order confirmation email to hand.

For more information please see our Delivery and returns page here.

You can purchase any item online by Click & Collect in all our jewellery stores. Salisbury,  Gillingham,  Shaftesbury,  Dorchester,  Ringwood and Plymouth. We require 3-5 working days from date of purchase for us to get the item into the store of your choice.

All the items shown on our website will be in stock. However, if there is a particular item, you would like that is showing as out of stock, please contact us and we will check if we have it in stock.

If not, we can always order it in for you to collect or send it out to you.

For the best fit, use our size guide.