The new earrings are also by Tous and are made of rubies and emeralds. I couldn't find them on their website but I did find this picture on Tous's Pinterest. https://www.pinterest.com/pin/519673244475348959/
I guess the only mystery earrings left are the beautiful diamond earrings she wore to the banquet and the ruby earrings from the beginning of Day 3 that she has worn many times before.