Gold, Glass Jewelry set

Necklace, Bracelet, Earrings set. Jewelry is gold style with lots of mesh details and glass beads. Lobster claw closings for necklace and bracelet. Necklace is slightly discolored compared to the other items. It has darkened into more of a bronze than a yellow gold. Not sure why since all the items were stored in the same place. I also only wore the complete set about one or two times. Items have been wiped down with alcohol.