Navette (Marquise) engagement rings

Antique, diamond navette ring, 14ct yellow gold

Antique, Edwardian ruby & diamond panel ring, 18ct yellow gold

Art Nouveau, diamond ring, 18ct yellow gold & silver

French, 1950s, yellow sapphire & diamond ballerina cluster ring

Art Nouveau, 18ct gold, diamond ring

Art Deco emerald & diamond ring, platinum

Art Deco, platinum, diamond cluster ring

Art Deco, French, platinum, pink sapphire & diamond ring

Vintage, 1940s three-stone old-cut diamond plaque ring, 18ct white gold

Belle Époque, French, emerald & diamond marquise cluster ring, original box