Finediam spotlight: lab-grown diamond rings, studs and the 20% sale
A look at Hatton Garden jeweller Finediam, from ready-to-ship lab-grown solitaires and studs to tennis bracelets, plus its autumn sale, free delivery and resizing.
50% of our commission goes to .Change
Pick a charity and we'll give them 50% of our commission.

Finediam codes & deals today
Enjoy Flat 23% off on sitewide
Enjoy 23% OFF sitewide on certified diamond jewellery crafted in Hatton Garden, London. Shop unique designs in UK hallmarked gold. Use code WIN23 at checkout. Use code WIN23 to receive 23% OFF sitewide at checkout. Valid on selected products available on FineDiam.com. The discount applies to the product price only and cannot be exchanged for cash. Cannot be combined with any other discount, promotion, or coupon code. Offer is subject to availability while stocks last. FineDiam reserves the right to amend or withdraw the offer at any time without prior notice. Standard returns and warranty policies apply to all purchases made using this code.
FineDiam Diamond Jewellery - Flat 23% off
Enjoy 23% OFF FineDiam diamond jewellery with code WIN23. Shop engagement rings, tennis bracelets, pendants and earrings made in Hatton Garden, London. Terms & Conditions Use code WIN23 at checkout to get 23% OFF. Offer valid on selected FineDiam products. Cannot be used with other discount codes. Subject to stock availability. FineDiam may change or end the offer at any time. Standard FineDiam delivery and return policy applies.
One free ring resize within 30 days
Where the design allows; usually up or down one size. Full eternity rings excluded. Customer pays two-way shipping.
Shopping at Finediam? See all current Finediam discount codes and deals, checked regularly.
Finediam is a Hatton Garden jeweller that sells mostly online, with showroom visits by appointment. Its range runs from engagement rings and wedding bands to stud earrings, tennis bracelets and pendants, and most of it uses lab-grown diamonds. Every product name says whether the stone is lab grown or natural, so you can see what you are buying. Many pieces are made to order in 9k or 18k gold or platinum, and a smaller ready-to-ship range is sent out next day. It suits couples ring shopping on a budget and anyone buying a jewellery gift who would rather have a bigger lab-grown stone than a small natural one.
What's worth a look
- IGI 0.53Ct D/VVS Lab Grown Oval Diamond Solitaire Ring 9k Gold Ready To Ship is currently £302 with the sale discount (£377 before it). It's a simple oval solitaire in 9k yellow gold with an IGI-certified lab-grown stone, and a sensible choice for a proposal on a tighter budget or at short notice.
- Ready To Ship D/VS 1.00Ct Lab Grown Round Diamond Stud Earrings in 9k White Gold are currently £215 (£269 before the sale). Plain round studs like these go with most outfits, so they make an easy birthday or anniversary present.
- 0.09ct Natural Diamond Lightning-Bolt Stud Earrings are currently £268 (£335 before the sale) in 9k white or yellow gold. They're one of the natural-diamond pieces, and a playful choice for someone who prefers small, quirky studs to classic solitaires.
- The Diamond Tennis Bracelets collection mixes lab-grown and natural designs in different carat weights and metals. Worth browsing if you want a statement bracelet for a milestone birthday. Prices vary a lot with stone size, so check the product page for each one.
Current offers
- A 20% Autumn Sale is running across the site, with the homepage countdown ending on 10 October 2026. The discount shows on product pages before checkout.
- UK delivery is free and insured, and ready-to-ship pieces can arrive next day. Made-to-order items take around two to three working weeks.
- One free ring resize is included within 30 days of purchase, where the design allows. Most rings can go up or down by about one size.
- Eligible standard items can be returned within 30 days if unworn and in their original packaging.
How to save more
- Look at the lab-grown version of a design before the natural one. The shop says lab-grown stones are typically 40 to 70% cheaper than mined diamonds of the same quality.
- Order within the sale window and choose a ready-to-ship piece if you can, as made-to-order, bespoke and resized items usually can't be returned if you change your mind.
- Get the ring size right before you order. Resizing is only free for the first 30 days, and full eternity rings usually can't be resized at all.
Products, prices and offers checked on the store's own website on 5 Oct 2026. Prices and stock can change.
Ad: affiliate links. If you buy through links in this article we may earn a commission, at no cost to you. Finediam didn't pay for this article or check it before we published it. How we make money.
The Thursday email
Every Thursday: the best codes from the brands you shop at. After you sign up, pick your brands and whether you want codes, hot deals, free delivery or student offers. No spam, unsubscribe in one click.
Keep reading
Carrie Elizabeth: gold vermeil jewellery, personalised charms and a 50% off sale
A British demi-fine jewellery brand with initial and birthstone charms, dog nose print pendants and a Lydia Millen collection, plus up to 50% off in the Sale.
Voucher Magpie team
Perfume UK: designer fragrance below RRP with free tracked delivery
Newark-based Perfume UK sells designer perfume, aftershave and gift sets below RRP, with free Royal Mail Tracked 48 delivery on every UK order.
Voucher Magpie team
Ouros Jewels: lab-grown diamond rings and jewellery from New York
A US jeweller selling lab-grown diamond rings, bands and pendants in dollars, with a Halloween sale running. Here's what UK buyers need to know.
Voucher Magpie team