Antique Holbeinesque Pendant Brooch

An enameled openwork pendant brooch, set with diamond, pearl, ruby and sapphire. Centering a rectangular amethyst.

Metal: 18K yellow gold
Diamonds: 18 old and rose-cut diamonds
Stones: 1 rectangular amethyst approx. 18.8 x 13.2 x 9.9mm. 10 variously shaped rubies, 8 cushion shaped sapphires, 9 pearls in range of 4.47 to 5.05mm.
Measurement: 74 x 42mm
Weight: 24.8 grams