Elegant Sterling Silver Marcasite Egg Drop Dangle Pierced Earrings

This pair of earrings is beautiful. They have a design that comes off like Faberge egg. The earrings dangle approx 1 3/8". The eggs are approx 3/8" wide. They are used and have light wear and tarnish but overall nice shape. They are signed Thai 925 and a makers mark that I am unable to discern.