How to Buy an Engagement Ring Without Knowing Her Finger Size

Buying an engagement ring when you really don’t know her finger size

Over my 25 years in the jewellery industry, I have helped many buyers choose the perfect diamond engagement ring—despite total uncertainty about their partner’s finger size.

Just today, a young gentleman walked into our showroom and made this very statement.

“I need an engagement ring, but I have no idea what finger size she is…”

As a result, I decided to write a short post giving the same advice that I gave him, for what its worth…

Suggestion #1 – Choose a suitable ring style

First of all, choose a ring style that can be re-sized. Simple four claw settings or six claw settings are easier to secure following work to re-size a ring. Avoid tension or part-bezel settings.

Lila engagement ring with heart shaped underbezel

A simple setting like the Lula engagement ring lends itself well to a size adjustment with its simple 4 claw setting and substantial band. 

Suggestion #2 – Choose a precious metal that is easier to work

Platinum and 18ct Gold are both easier to re-size. Avoid Palladium which has a tendency to be more brittle especially in the area where a ring has been re-sized. In addition, Platinum and 18ct Gold are more durable than alternative choices including 9ct Gold. Platinum is always a good choice. Another benefit is the natural whiteness of Platinum which will never tarnish in appearance.

Suggestion #3 – Don’t choose an engagement ring with a thin band

Make sure that your chosen design is not too thin behind the finger. When adjusted for size, the underside of the band can become fractionally thinner, so choose an engagement ring with a fairly regular 2.5mm wide band. Increasing the finger size of a ring, or reducing it usually removes metal. For this reason, don’t choose a band that is too thin around the finger.

 

Suggestion #4 –  Select a midway finger size

Choose a ring size that is midway between large and small. This will be easier to size larger or smaller if the size is incorrect. We recommend a popular finger size such as UK size L, M or N for this reason. In addition, should you need to return the ring, a jeweller is more likely to be able to re-stock an average or midway finger size.

Suggestion #5 – Use a replica or ‘dummy’ ring

Proposing can be tricky. Getting the right finger size and style can be extremely difficult. For this reason, proposing with a dummy ring makes a lot of sense. The final ring can be chosen together after the finger size is known. Admittedly, some buyers prefer to choose THE ring, but this process does work well for some people.

 

Suggestion #6 – Make sure your jeweller has your back

Talk to your jeweller before you make any purchase. Make them aware of the situation and ensure that they will support any changes or re-size work even if there is a cost involved. Better to have this discussion before you make your purchase so that they are fully aware of your own circumstances. For your own peace of mind, seek the additional peace of mind from getting after-sales help from your jeweller.

 

Mark Johnson

About Mark Johnson

Mark attended Liverpool University and went on to pursue a career in the diamond industry. After more than a decade working in polished diamonds, Mark moved to the Isle of Wight where he launched Serendipity Diamonds. He works most days from their busy Ryde showroom, photographing jewellery and writing for the Serendipity Diamonds website. Anyone interested can connect with Mark on Linkedin via the profile link.

Mark Johnson

About Mark Johnson

Mark attended Liverpool University and went on to pursue a career in the diamond industry. After more than a decade working in polished diamonds, Mark moved to the Isle of Wight where he launched Serendipity Diamonds. He works most days from their busy Ryde showroom, photographing jewellery and writing for the Serendipity Diamonds website. Anyone interested can connect with Mark on Linkedin via the profile link.