16cm bracelets are designed for children's wrists. The average size for a ladies bracelet is 20cm, although those with small wrists would need something around a 19cm. If the bracelet will have charms added to it it's sensible to purchase a bracelet that is slightly larger to avoid them being too tight as beads and charms are added.
Standard UK Ring Sizes | US Ring Sizes | PANDORA Ring Sizes
Depending on the type of ring your purchasing and the preference of the wearer, optimum ring sizes can vary greatly. Stacking rings, or a very wide band, will feel much tighter on the finger than a single ring, meaning that you'd ideally look to have wide/multi rings worn in slightly larger size, but this isn't always the case.
For this reason, the most accurate way to identify the size of ring you require is to visit your local Swag boutique (or other jeweller if there isn't a Swag store close to you) and try the ring sizes they have in store. This will ensure you can check the fit of the ring and ensure you end up purchasing the right size.
If you are unable to visit a store and confirm your size, then you can take a piece of string or a thin strip of paper. Wrap it around the base of your finger. Use a pen to mark the point where it overlaps, forming a complete circle. Measure the length from the starting end of the string/paper to the pen mark, in millimetres. You will then have the circumference measurement of your finger in millimetres, and can use the ring size conversion chart given on this site to work out an estimation of your ring size.
Ring Size Conversion ChartHere is a conversion chart for the most popular ring sizes.
|Inside circumference (mm)||Sizes|