Purely Diamonds Discount Codes & Promo Codes March 2026

More Ways to Save Money at Purely Diamonds

Smart diamond shoppers know that Purely Diamonds offers some of the most flexible payment options and genuine savings in the UK jewellery market. From interest-free finance that won't cost you a penny extra to seasonal promotions that can slash prices by up to 40%, there are plenty of ways to make that dream piece more affordable. Whether you're planning a proposal or treating yourself, these insider tips will help you get the best value from this family-run London workshop.

How to Apply Your Purely Diamonds Discount Code

Getting your discount to show at checkout is straightforward, but timing matters for maximum savings:

1. Add your chosen jewellery to your basket and proceed to checkout
2. Look for the "discount code" field in your basket area
3. Copy and paste your promotional code exactly as provided
4. Click 'Apply Voucher' to see your discount reflected in the total
5. Complete your purchase before the promotion expires

Remember that discount codes can't be used with finance options or combined with other promotions. If you're planning to use their 0% interest-free credit, you'll need to choose between the promotional discount and the payment flexibility - often the finance option saves more on larger purchases over £900.

0% Interest-Free Credit for Purchases Over £275

Purely Diamonds' partnership with Novuna makes expensive jewellery surprisingly affordable through genuine 0% interest deals. You'll pay exactly the same total amount, just spread over several months instead of all at once.

0% Interest Tiers

• 3, 6, or 9 months interest-free for any purchase over £275
• 12 months interest-free for purchases over £900
• 10% minimum deposit required (you can pay up to 60% upfront if preferred)

Who Can Apply?

• UK residents only who've lived here for 12+ months and work 16+ hours weekly
• Home address delivery required for security on financed orders

For larger investments, they also offer 12.9% APR options over 24, 36, or 48 months. While not interest-free, this rate is competitive for luxury purchases and keeps monthly payments manageable.

Free UK Delivery Worth £15-25

Every Purely Diamonds order ships free within the UK via Royal Mail Special Delivery - a premium service that typically costs £15-25 elsewhere. Your jewellery arrives fully insured and tracked, usually the next working day after dispatch, with email notifications sent between 5pm and 7pm on dispatch day.

International customers pay just £20 for European delivery or £40 worldwide via FedEx or TNT Express - significantly less than many luxury jewellers charge for similar service.

30-Day Money-Back Guarantee on All Purchases

Unlike many jewellers who exclude custom pieces, Purely Diamonds offers a full 30-day money-back guarantee on both in-stock items and made-to-order jewellery. You can return any unworn piece for a complete refund or exchange, as long as you include the original box, documents, and certification.

The only exception is truly bespoke jewellery created to individual design specifications. Returns must be sent via Royal Mail Special Delivery or another tracked, insured courier for the full purchase value.

Price Match Program for Certified Diamonds

Found the same diamond cheaper elsewhere? Purely Diamonds will match the price on any GIA or IGI certified stone through their Price Match Program. Contact them with details of where you found it, the price, and a link to the listing.

Important limitations: the match applies only to the diamond itself (not the setting), excludes other retailers' promotions, and must be arranged before purchase. Quotes are valid for 48 hours, so act quickly once you've found a better price.

Newsletter Perks and Exclusive Offers

Subscribing to the Purely Diamonds newsletter unlocks access to single-use promotion codes that aren't available to the general public. These exclusive offers are distributed first-come, first-served and can only be redeemed once.

Newsletter subscribers also get early access to seasonal sales, which typically run from April to September with discounts reaching up to 30%. The brand runs special Mother's Day promotions starting in March, plus various seasonal events throughout the year.

Seasonal Sales and Special Offers Section

The dedicated 'Special Offers' section on their website features jewellery at reduced prices, with discounts of up to 40% on select items. In-stock jewellery often receives priority for discounts and qualifies for faster shipping within 48 hours.

Key Sale Events

Key sale periods include Black Friday, Christmas, and summer sales, where savings can reach up to 50% off. Boxing Day is another prime time for significant discounts on a wide selection of pieces.

Save 30-40% with Lab-Grown Diamonds

Lab-grown diamonds represent some of the best value in the Purely Diamonds collection, offering 30-40% savings compared to mined diamonds of identical quality. These stones are chemically, physically, and optically identical to natural diamonds but cost significantly less.

With the current limited-time promotion offering an additional 20% off lab-grown diamonds, you're looking at potential savings of 50% or more compared to traditional high street prices for equivalent quality.

Get a Free Valuation (Worth £50+) and Premium Packaging

Every purchase includes a free valuation document - a service that typically costs £50-100 elsewhere. Your jewellery also arrives in a faux-leather lined presentation box, inside an outer gift box with silver ribbon, perfect for special occasions.

For engagement rings, you can request a smaller, more discreet box by noting this in the "Special Requirements" section during ordering or emailing sales@purelydiamonds.co.uk directly.

Gift Cards with Flexible Redemption

Purely Diamonds gift cards can be loaded with any amount you choose, making them perfect for contributing towards a larger purchase. Recipients can redeem them online by entering the code at checkout, by phone, or in person at their London or Manchester showrooms.

Gift cards are delivered via Royal Mail Special Delivery or can be collected from either showroom location, giving you flexibility for last-minute gifts.

Customer Support at Purely Diamonds

Get expert advice on diamonds, financing options, or order queries through multiple contact channels. Their team can help you navigate the best savings options for your specific purchase.

• Email: sales@purelydiamonds.co.uk for general enquiries and special requests
• Showrooms: London (near Hatton Garden) and Manchester (St Ann's Square)
• Virtual appointments: Available for personalised consultations from home
• Phone support: For gift card redemption and order assistance

Their website features order tracking, account management, and a comprehensive help section for self-service support.