COSTUME JEWELRY Crystal CC dangle drop earrings Vintage

Was a gift from a person with $$$, from 2004ish? It’s hard to see any stamp on the back but I was told it was purchased from the boutique on Rodeo drive. Since a brand/ manufacturer stamp is not legible I am absolutely NOT selling these under ANY designer name, and just under Costume Jewelry. No box or bag. These are in preloved condition and price reflects so.