Classic Princess cut earrings, 0.5 ctw each earring.
Screw-back posts but using as push-backs to get them up against the lobe. I think the posts are slightly longer than usual which allows the earring to droop a touch. The current backs are silver and very tight but you could certainly use them as they were originally intended as the thread is intact.
I am not a jeweler but I would guess these to be about an "I" in color. To my unaided eye I see no inclusions.
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