Top tips for getting the perfect fit — every time.
Finding your ring size shouldn’t be a guessing game. Whether you’re treating yourself or buying for someone else, getting the size right is key — especially since not all rings can be resized. Luckily, The Diamond Store makes it easy with our free Ring Sizer App, plus expert tips to help you measure accurately at home.
Before you get started, keep these expert tips in mind:
The most accurate way to find your ring size is with a physical ring sizer. Good news: you don’t need to visit a jeweller. You can order a free ring sizer directly from The Diamond Store to ensure a precise fit.
Each finger — and even each hand — can vary in size. Be sure to measure the exact finger where you plan to wear the ring.
Fingers swell and shrink throughout the day. Always measure in the evening when your fingers are at their largest for the most reliable result.
Measuring cold fingers can lead to a size that’s too small. Make sure your hands are at room temperature.
A properly sized ring should slide over your knuckle with slight resistance and sit comfortably without spinning or slipping off.
Not all rings can be resized, so getting the size right the first time really matters — especially for surprise proposals or gifts.
Finding your ring size has never been quicker — or more discreet. The Diamond Store’s free Ring Sizer App is designed to help you measure an existing ring using just your smartphone.
While the app offers a fast and convenient way to find your ring size, we always recommend confirming with a physical ring sizer if possible — especially for rings that can’t be resized or when sizing for a different finger.
With the right tools and a few simple tips, finding your perfect fit is effortless. Whether you’re planning a surprise proposal or updating your jewellery collection, The Diamond Store’s Ring Sizer App is here to help — one tap closer to the perfect ring.
We want you to feel completely confident when you shop with us. That’s why we offer FREE 30-day returns for refunds and 60-day exchanges across the UK and Northern Ireland.
If you’ve ordered a ring smaller than a size J or larger than a size Q, don’t worry — these are custom sizes, but we’re still happy to offer a free exchange or resizing if the fit isn’t quite right.
Changed your mind? No problem — you can cancel your order anytime before it’s been dispatched.
Just reach out to our friendly team via Live Chat, by email at customerservice@thediamondstore.com, or give us a call on 0345 084 1200 (or +44 345 084 1200 if calling from outside the UK). Please have your order number handy to help us assist you as quickly as possible.
Please note that for rings smaller than size J or larger than size Q, the width may vary slightly (up to 10%) due to the crafting process. If you need any adjustments, we’re happy to help.
If your item arrives damaged or defective, we’ll make it right — fast. We’ll either repair or replace it at no cost to you, or provide a refund once it’s been assessed by our head jeweller.
Our standard returns policy is 30 days to return, and 60 days to exchange.
We stand by the quality of our jewellery. That’s why all our pieces come with a 5-year warranty against defects in materials or craftsmanship. Every item is also fully hallmarked according to UK legislation, confirming its authenticity and origin.
Once we’ve received and inspected your returned jewellery, we’ll process your refund right away and email you to confirm. Depending on your bank or payment provider, it may take 3 to 5 working days to show up on your statement.
We’ll always refund you via the same method you used to make your purchase — whether that was credit or debit card, PayPal, Pay4Later Finance, bank transfer, or another option.
To avoid delays, make sure to include the returns label print-out with your parcel. This helps us identify your return quickly.
We’re proud to say that all our diamonds are conflict-free and fully compliant with United Nations regulations. When you buy from us, you’re choosing ethical beauty.
We’re here whenever you need us.
📧 Email us: customerservice@thediamondstore.com or returns@thediamondstore.co.uk
📞 Call us: 0345 084 1200 (UK) or +44 345 084 1200 (International)
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