Vintage Clip On Earrings Unusual Frosted Blue-ish? Slight Purple Tones?

Description

These earrings measure about 0.75". Some marks and scuffs to front and sides. Small amount of makeup staining to ridges of clips. Preowned vintage earrings, sold as shown - I am unsure of material type(s) because of this. Pictures show different angles for you to review - while I attempt to note any defects, some tarnish/signs of wear may be visible that are not otherwise stated. Earrings are tested and photographed on a thin/smooth earring stand (not included) to show that the clips are in working order. Country of manufacture cannot determined.