The only place in the USA that I know of that makes true gold plated jigs is Tom's Tackle, who just joined forces with IceFishOhio.com as a sponsor for the upcoming season and this off season. Give Ryan a call 218-280-1904.
Take it for what it's worth, but I can't say enough good things about this company, the Tessier family, and the "Pink Charmer" they sell.