Italian gold and micromosaic necklace - 19th century

a double festoon chain 18K gold necklace with 19th Century micro mosaic depicting: a view of Tivoli with the Temple of Vesta, The Pyramid of Cestius and two birds on a branch set into a back glass plaques. Later 18k gold mounting hallmarkd "750"
Pendant plaques 4,5 x 1,6 cm, side plaques 1.8 x 1.6 cm, clasp 2 x 1 cm, necklace length 64 cm. Total weight 35.3 g
Item condition grading: **** good.