18k Gold Diamond Ring | Eternity Band

Introducing our Promises Diamond Eternity Band, the perfect symbol of everlasting love. This stunning eternity band is crafted with diamonds set in 18k gold, radiating a timeless elegance.

Whether it's for your wedding day or an everyday cool style, this handcrafted ring by our expert jewellers will be the perfect addition to your jewellery collection. Our in-house London studio has designed this 18k solid gold ring to exude a friendly and welcoming vibe, making it a perfect choice for any occasion. Make a promise that will last forever with our Promises Diamond Eternity Band.

Check out our Gold Women's Ring Collection for more pieces to wear along with this 18k Gold Diamond Ring. 

Lead Times

All pieces are custom made and estimated production times are 3-5 weeks from purchase.

If your order is urgent, please email info@argent-asher.com and we will do our best to accommodate you. Please note: the shipping method is included in the overall lead time of your piece, but does not expedite your order's production time.

Shipping

During manufacturing you will receive update emails notifying you of progress. Once your piece is ready to ship, we will email you with the tracking information. All jewellery requires a signature from the purchaser, in order to be delivered successfully.

FedEx 2-Day: 2 business days - excluding weekends and holidays

FedEx International: 2-3 business days - excluding weekends and holidays

Customs

For international orders and shipments leaving the UK - there is a legal requirement to pay duty charges and/or VAT when arriving at the destination Country. These charges are the responsibility of the purchaser.

Warranty, Returns & Aftercare

Returns & 12-Month Cover for Jewellery purchased inside of the UK.

Most of our fine jewellery pieces are eligible for complimentary returns.

We understand that choosing jewellery is a thoughtful purchase, so if something doesn’t feel right, we aim to make the return process straightforward and reassuring.

Please note:
• Personalised and bespoke pieces can’t be returned unless there is a fault on arrival
• Faulty items must be sent back unworn and in their original condition
• Conditions apply, please see our full Returns Policy for details

Each Argent + Asher piece is made to order in our London atelier and includes a UK 12-month warranty covering manufacturing issues, such as:

• Stones becoming loose
• Settings or claws shifting
• Missing small stones
• Faults with clasps or chains

If a manufacturing issue occurs within this period, we will arrange a repair.

Resizing & Repairs

We offer resizing on selected ring designs.

Please note:
• Eternity bands cannot be resized
• Some styles are not suitable for adjustment
• Most rings can be resized within approximately 1–1.5 sizes of the original

If you’re unsure on sizing, it’s always worth confirming before ordering. It’s one of the most common concerns when investing in fine jewellery, and guidance is always available.

Repairs Outside Warranty

If your piece requires attention outside of the warranty period, or due to general wear over time, we can usually arrange a repair for a fee.

Each item is reviewed individually, and we’ll outline the options clearly before any work is carried out.

What affects the Price?

• Material - 14k or an 18k solid gold upgrade
• Diamond set
• Bespoke & unique design

Why this Necklace Costs More Than Cheaper Alternatives?

Unlike mass-produced or gold-plated jewellery, all our pieces are handcrafted to order in solid gold and are made to last a lifetime not just a season.

Want to see exactly how we price our jewellery?

Read our full → pricing guide