1970s Silver Metal Gemstone Drop Earrings

1970s Silver Metal Gemstone Drop Statement Earrings
No makers marks, in very good vintage condition. 
Heavy weight metal filigree patterned rectangle drops
Varying inset gem stones (not sure what stones)
Large circular base with gem stone
Sturdy clip on clasps. 
Measuring:
Width: 0.75"
Drop: 3"