An early 20th century openwork diamond and platinum heart shaped pendant

An antique diamond riviere with a cluster pendant

An early 20th century platinum and diamond necklace

An early 20th century gold and gem set necklace, circa 1900

Archaeological Revival gold and amethyst necklace, circa 1870

A mid-century diamond riviere necklace

A mid-century baguette cut diamond collar necklace

A Rare Bulgari "Montete" Necklace

Bulgari

Mid-20th Century Gold and Diamond Two Row Swag Necklace

An 18k Gold, Diamond, Emerald and Rock Crystal Lariat Necklace

Early 20th Century Platinum and Diamond chain

A 1970s gold link necklace

An antique diamond necklace, mid 19th century

A tubogas chain with diamond set pendant

Bulgari

An early 20th century diamond cross pendant

A diamond flower necklace, circa 1950

An art deco sautoir and pendant watch

J.E. Caldwell

An antique gem-set heart pendant locket on a pearl set gold chain

A late 19th century ruby and diamond crescent pendant

A gold long chain necklace with oval and lozenge pattern links, circa 1890

A Diamond Cluster Pendant

An early 20th century scroll and pear shaped diamond pendant