Sizing – Lucy & Mui
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We understand it can be difficult to figure out your ring sizing, which is why we have created a ring sizing guide for you. These size charts are only a guide, but can give you a better idea of what size you might be. All our rings sizes are based on US & Canada Sizing. For more detailed sizing information, click here.

As our rings are made-to-order and individually hand-finished by our master craftsmen, no two pieces are the same. We do not offer quarter ring sizes for the simple reason that a quarter size difference is extremely minute - and while we aim to be as accurate as possible with our ring sizing, please allow for a production tolerance of +-0.5mm in diameter on ring sizes to account for hand-finishing of our minimal, thin bands. For your reference, 0.5mm is approximately half the thickness of a fine thread.

If you are still unsure of your ring size, simply check out the ring of your choice and under the Size option, select "I'm not sure - Send me a Free Ring Sizer". Upon receiving your ring order, we will arrange for your Free Ring Sizer to be sent to you, and await your confirmation on size.

Feel free to email us at hello@lucyandmui.com and we can better advise you on the best fit for you. If you would like to be sized in person, you can also visit any local jeweler in your area - most would be happy to help you with ring sizing information.

If you hesitate between two sizes, always order the larger one!