An art deco onyx and diamond dress ring set with a sugarloaf amethyst, circa 1925

Boucheron

Gold, tourmaline and topaz ring

Bulgari

An aquamarine and diamond ring

A gold and sapphire double band ring

Bulgari

Early 20th century diamond cluster ring, circa 1915

A collection of gem set gypsy rings mounted in 18K gold

A sapphire and diamond panel ring, circa 1910

A yellow gold "B.Zero1" ring

Bulgari

An early 20th century octagonal cut diamond ring

An art deco ruby and diamond geometric cluster ring, circa 1920

Art Deco three stone baguette diamond ring, circa 1930

A rare art deco Diamond ring, surrounded by rubies and diamonds

An Art deco sapphire and diamond ring, circa 1920

Emerald and diamond ring, circa 1930

A diamond Ring

Bulgari

An emerald and diamond ring, circa 1930

A pink sapphire and diamond gypsy ring

A mid century art deco-style brownish-yellow diamond ring

An art deco unheated Ceylon sapphire and diamond ring, France, circa 1920

A fine and rare antique diamond ring early 19th century

A rare art deco ruby and diamond ring, Ellis Brothers, Canada, circa 1925

An important victorian emerald and diamond ring, circa 1890

An art deco sapphire and diamond ring, Circa 1930

A sapphire and diamond 'forget-me-not' ring, New York, circa 1960

Cartier

A sapphire and diamond 'forget-me-not' ring, New York, circa 1960

Cartier

An art deco coral and diamond ring, 1930s