How to (Surprise) Size an Engagement Ring

Men who are planning to pop the question to their significant other encounter a common dilemma: they want to have the ring ready for their proposal, but do not know their loved one’s ring size.

How is one to supposed to pick out an engagement ring for their loved one when they do not know the correct size?

There are several ways to pick out an engagement ring for her without ruining the surprise.

Take a Peek at her Jewelry Box

If she has a jewelry box, check out the other rings she has. If you know she will be gone at a certain time, take the ring to a jeweler to figure out the size. Odds are she will be the same or similar size for an engagement ring. Make sure to put the ring back where you found it, however.

You can also figure out the approximate ring size by tracing the ring onto a piece of paper, or measuring it with a tape measure or piece of string. Doing so will give you a ballpark measurement that you can use to bring to a jewelry store for further advice.

Have Her Try One On for Size

If you are with her and happen to be near a jewelry store, stop in and have her try on a promise ring. If she asks for a reason, be careful not to blow your cover.

Or, simply buy her a promise ring, and if need be, get it resized with her.

Ask for Help

Ask those close to her, such as her mother or siblings, or even a close friend, if they have bought her rings in the past. If they have, they may have measurements documented somewhere, or know her size offhand.

Go Big

When it comes time to make a decision, consider all of the intel you’ve gathered, and use your best judgment. It is always best to go with a bigger size, as it is easier to resize to a smaller ring than it is to make one bigger.

When in doubt, it is best to consult a jeweler for help. We are more than happy to help you size an engagement ring for your loved one. For more information, contact us at 617-720-2724 or

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