How do I measure a necklace that I have designed and finished?
First start with a well-marked steel ruler. A handmade necklace should be measured from end to end. For example, a necklace with a lobster claw and ring closure should be measured from the end of the jumpring to the tip of the lobster claw.
A necklace finished with a box clasp would measure differently. In this case you should make a linear measurement of the beaded and/or chain part only (including any wire loops formed from crimp closures) and then add the exact measurement of the box clasp fully closed plus its accompanying rings that attach to the necklace loops.
- Sandra Lupo, Jewelry Designer and Instructor and Swarovski crystal Ambassador