Rare Arlequin Georgian paste silver necklace Antique foiled black dot buttons silver curb chain paste clasp

One of a kind I assume! Wonderful necklace comprising of 5 colorful Antique Georgian buttons and a paste clasp on an antique silver chain. They vary in shape with 3 rounds and 2 square cushion shaped, as well as a round concealed clasp. The center and largest is pink with a red foil underneath and measures 12.7mm O 2 Square shaped ones surrounds it: a clear one with red foil and black dot, measuring 10.5x10x5mm and a deep yellow of the same dimensions. The remaining 2 are a green paste, emerald hue, measuring 12mm Ø and a clear paste with silver foil and black dot measuring 11.6mm Ø. The concealed clasp dimensions are: 7.4mm Ø x 7.9mm. The round clear paste lays upon a pale gold foil, this clasp seems to come from a Georgian rivière necklace The back of the green paste shows a dent and some scuffs. The chain is 4mm width x 1.5mm and looks like a double curb style. There is a lovely patina all throughout and the silver is between 835 and 925, I date the chain at around 1880s, it’s rather thick and may have been a fob/watch chain. The total length of the necklace is 45cm or 18 inches. The total weight is 20.2 grams. Thanks for reading! ps: as we any antique foiled jewellery it is important to keep it away from water and moisture!