Vintage 1980s blue sapphire solid sterling filigree silver ladies earrings

A pair of vintage earrings.

These earrings are 1980s earrings they have patina/tarnish and the backs (butterfly clasps) are a bit dity but I leave jewellery uncleaned and I leave that up to the buyer.
 
Not marked but I have checked and these are not plated, they are solid sterling silver.
 
The silver is filigree.
 
Each earring has a 1mm blue sapphire that is a round faceted Earth mined sapphire, the sapphire has not chemical enhancement.