Victorian yellow gold emerald locket necklace

Really interesting 14k yellow gold necklace with pearl and emerald.  The tiny heart at the bottom is a locket and it measures 3/8" wide.  The pendant part of the necklace measures 1" wide, 1 3/4" long.  The necklace has a wearable length of just under 15".  A lovely antique piece, circa 1890.