Vibrant Silver Tone Yellow Glass (?) Jewelry Set

This vibrant silver tone possibly glass jewelry set features a bold collar design, perfect for adding a pop of color to any outfit. The included earrings are not by the same maker as the necklace but match well . They are made by a maker I am unaware of. Please see the picture for the mark on the back of the earrings. Please see the pictures as they are part of the items description.