My contemporaries in the antique jewelry biz call this style of necklace a "love knot chain". Whether or not it was meant to be a love token in the 19th century, it's elaborately fancy, and I myself LOVE IT. It's almost as much chainmail as it is chain!
MATERIALS: 9k gold (marked)
AGE: c. 1890
CONDITION: Very good
SIZE: 18" length