From bottom to top:
Italian Micromosaic of a Duck and Chick
Italy, Circa 1785
Attributed to Giacomo Raffaelli
Diameter: 6.8 cm, 2.67 in.
Italian Gold Mounted Green Porphyry Box with Micro-mosaic of Finches
Green Porphyry, Gold
Italy, Circa 1810
Diameter: 6 cm, 2.36 in.
Height: 1.7 cm, 0.67 in.
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These Micromosaics are of the finest quality and are considerably rare for their subject matter; swans and goldfinches with chicks in a nest are particular rarities.