PROVIDED HERE ARE CONVENTIONAL SIZING METHODS FOR RINGS AND NECKLACE CHAIN LENGTH. AS OTHER JEWELRY TYPES HAVE MORE FLEXIBILITY, PLEASE REFER TO THEIR LISTED DIMENSIONS FOR GENERAL SIZING. If you are unsure whether or not your item of choice will be the right fit, please contact me at firstname.lastname@example.org I will be happy to size your jewelry for you.
For ring sizing, please print out the chart below on A4 paper without any scaling and adjustment to the image. Remember to make sure the ring sizer is printed out correctly using a ruler to double check its lengths. At last, remember to leave some breathing room for your finger when picking a correct ring size.
For necklace chain length, please use this image as a reference. I also suggest that you use a measuring device to ensure your chosen length is the right fit.