Take one of their existing rings to a jeweler for a professional measurement. Ensure the ring you grab is one they wear on their "ring finger" to ensure the most accurate comparison.
Ask a close friend or family member if they happen to know the size. Occasionally, friends may have swapped jewelry in the past or discussed sizes during previous shopping trips. Direct Measurement how do you know what size engagement ring to buy
In the United States, the average woman’s ring size is a . While this is a helpful starting point, finger sizes vary significantly based on height, bone structure, and even the climate. Because it is much easier for a jeweler to "size down" a ring (remove metal) than to "size up" (stretch or add metal), it is usually safer to aim slightly large if you are guessing. The "Stealth" Methods Take one of their existing rings to a