Vtg Victorian Deep Sapphire Blue Paste Stone Earrings 10K ?

Offered for auction are these beautiful victorian earrings with a deep sapphire blue paste stone. On the back of the earrings, you can see someone had the old wire fastening removed and replaced with a post. That is why I believe the mounting is a carated gold, who would go to all that trouble for costume jewelry? These are not marked, so... they also do not have any post backs. Sold as found. Thanks for looking! PLEASE no bidders outside the U.S. I will NOT ship outside the US~No exceptions! Paypal only, within 5 days of auctions end. Thanks~