10k yellow gold .40 ctw moissanite stud earrings

These earrings are in excellent pre owned condition showing little to no signs of wear. 10k yellow gold stud earrings with moissanite stones. These look like and test as diamond but are lab made. 4.8 mm. Unknown manufacturer. Total weight is .72 grams . Please note that one of the 10k gold ear backs does not grip the post and slips right off. I have tried to remedy it without success. I’m including a yellow gold plated over 925 sterling silver post for security as well as the malfunctioning post (not in photos) Reasonable offers considered