Aquamarine teardrop pendant necklace

Aquamarine (March birthstone) teardrop pendant necklace, stamped AG on pendant (means 10K gold), unsure of gold content of chain as can’t find a stamp, received from my aunt in Germany but not my style. It came in this Bucherer leather box (Swiss Jewelry maker now owned by Rolex) but I can’t say for certain that it was made by Bucherer. Approx 11in long.