Jewelcraft was a logo and name used by Coro from 1920 – 1950′s, Jewelcraft was produced by a company in England. Please refer to CJC below for more in depth information. Coro were prolific manufacturers and you will often get the same designed pieces with different logos.
See other necklaces here: https://www.jewelspast.com/jewellery/necklaces/
Always a good source of information about costume jewellery can be found here: http:// www.costumejewelrycollectors.com