Amethyst Riviere Collar Necklace with Peridot and Diamond

A vintage 18ct yellow gold necklace set with 34 oval-cut amethysts graduating towards the centre, alternating with 35 marquise-cut peridots, each peridot topped with a brilliant-cut diamond. Secured with an invisible box lock. Made in Italy, Alessandria with maker’s mark. Circa 1980.

• Dimensions of largest amethyst: 12 x 9 x 4 mm
• Dimensions smallest amethyst: 9 x 6 x 4 mm
• Dimensions of peridot: 7 x 3 x 2 mm
• Length: 39cm
• Gross weight: 84.85 g