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You have the butterflies, the ring idea, and the perfect moment in mind. Now you just need the size, without giving the game away. Take a breath, we have you. Here is a friendly, foolproof guide to get the answer quietly, so your proposal stays a delicious surprise.
First, a quick sizing reality check!
Fingers change through the day. Warm cafés make them a touch fuller, chilly walks make them slimmer. The goal is a size that slides on with ease, sits neatly at the base, and needs a gentle wiggle to come off. If you end up a fraction out, do not worry. Platinum and 18ct gold resize beautifully and we can refine the fit after the “yes”. Romance first, perfection next.
Six discreet ways that work:
Choose a ring they wear on the ring finger of the right hand. If they are right handed, the left hand (where traditionally the engagement ring would be worn) will usually be a size smaller. Slip it to us on King Street for a quick measure or place it on a printable sizing guide at home, then return it to the jewellery dish before anyone notices. Mission accomplished.
Place the borrowed ring on plain paper. Draw around the inside edge to capture the inner circle. Measure the diameter with a ruler, then use a ring size chart to convert the number to a UK letter. Take a photo of the drawing and the measurement, just in case nerves kick in later.
While they sleep, wrap a soft ribbon or thin paper strip around the base of the ring finger. Mark the join, measure the length in millimetres, then match it to a ring size chart. It is old school, it is surprisingly accurate, and it only takes a moment.
Ask their best friend to steer a shopping chat toward rings. A playful try on at a beauty counter or boutique can reveal a size without raising suspicion. Champagne for the accomplice after the yes!
An old one but a good one! Press one of their rings into a small bar of soap to create a clean imprint. Bring the soap to us or photograph the imprint beside a coin for scale. We can read a lot from a neat impression, especially width and inner diameter.
Suggest a casual wander past jewellers “for a work project” or “gift ideas for a family member.” Encourage them to try a few pieces for fun. Watch which sizes fit and make a mental note. Keep it light, keep it moving, and offer coffee next door so it feels natural.
If the size remains a mystery and time is tight, choose a design that allows a smooth resize. Sleek solitaires, diamond shoulders and plain bands are very forgiving. We can present the ring beautifully for a gift or a proposal, then refine the fit together. A slightly generous fit still makes a magical moment.
Extra tips only a jeweller will tell you:
Band width matters. A wider band can feel snugger than a slim one, so tell us the style you are choosing.
Take and keep photos. A clear photo of their fingers and any rings they wear helps us judge proportion and shape.
International sizes differ. If your secret research turns up a US number or an EU size, we convert in seconds.
Bring your clues. Tracings, ribbons, soap impressions and borrowed rings all help our team give you a confident answer.
