If you're trying to find out her ring size without asking directly, you're not alone — it's the one practical detail a surprise proposal can't skip, and the one you can't just ask for. The good news: there are several reliable ways around it, and if you still end up guessing wrong, it's a fixable mistake, not a disaster.

Five Ways to Find Her Ring Size

1. Borrow a ring she already wears
2. Enlist her inner circle
3. Look for clues beyond the ring
4. Try the string or paper trick
5. If you have to guess, know the resizing policy first

Borrow a Ring She Already Wears

This is the most accurate method available. If she wears rings on her right hand or a different finger, borrow one of those — a jeweler can use it as a reference and get remarkably close, even though the exact size can shift slightly finger to finger. If you can borrow a ring she actually wears on her left ring finger (a stacked ring, a family piece), even better. Either way, take it to a jeweler to be measured professionally rather than guessing from a printable chart — and put it back before she notices it's gone.

Enlist Her Inner Circle

A sister, a close friend, or her mother may already know her size, or can find out far more casually than you ever could. A simple "hey, random question, do you know if she's ever mentioned her ring size?" lands very differently coming from someone she talks jewelry with regularly.

Look for Clues Beyond the Ring

Pinterest boards, saved Instagram posts, or an offhand comment about a ring she loved are soft signals worth paying attention to — not because they tell you her size, but because they might tell you the size range she's already had checked, especially if she's ever gotten a ring resized or purchased one for herself.

The String or Paper Trick

A low-tech but genuinely useful option: while she's asleep, or using a ring she already wears, wrap a thin strip of paper or string snugly around the base of her finger (or around the inside of the ring), mark where it overlaps, and bring that measurement to a jeweler. It's not as precise as a professional sizing, but it narrows things down considerably.

If You Have to Guess

Sometimes none of the above are realistic, and you have to make your best estimate. This is the riskiest path, but it's not an irreversible one — and it's worth knowing that before you order.

Every SAMA ring includes one complimentary resizing within a year of delivery, up to a full size in either direction, with a prepaid return label for U.S. orders and a 10–14 business day turnaround once it's received. After that first year, resizing is available for a flat fee — $100 for 14K or 18K gold, $125 for platinum. A few styles, like eternity bands, tension-set rings, and engraved or fully custom pieces, can't be resized due to how they're constructed; SAMA's care team can walk through the options for those individually.

Full details are on SAMA's size guide

Getting Ready

None of these methods are perfect on their own, but combined — a borrowed ring, a second opinion from someone close to her, a little context from what she's already shown interest in — you can get remarkably close. And if the size still isn't exactly right, that's what the resizing policy is there for. Once you've got a number to work with, the next decisions are the fun ones: which design, and how soon to order it.

Explore the Fully Composed collection, or revisit choosing between solitaire, halo, and three-stone if the design is still the open question.

FAQ's

What's the most accurate way to find her ring size without asking?

Borrowing a ring she already wears and having a jeweler measure it professionally — ideally a ring worn on her left ring finger, though a ring from another finger still gets you close.

Do ring sizes work the same across every jeweler?

General sizing standards exist, but fit can vary slightly by band width and style, so a professional measurement is more reliable than a generic printable chart.

What if I still end up guessing wrong?

It's fixable. Every SAMA ring includes one complimentary resizing within a year of delivery (up to a full size, with a prepaid return label for U.S. orders), and paid resizing is available after that. A few styles — eternity bands, tension-set rings, and custom or engraved designs — can't be resized due to their construction.

Which finger and hand should I measure from?

The left hand, ring finger, is the standard in the U.S. — but if you're borrowing a ring she wears on a different finger, a jeweler can still use it as a helpful reference point.