The Retro jewelry style was popular between the mid 1930’s and the late 1940’s, and is sometimes referred to as ‘cocktail jewelry.’ The Retro style is bold, even oversized, despite the Depression years and World War II. Curves are back in Retro and mid-century jewelry; rose and green gold are common settings for rubies, and also semi-precious stones including citrine, topaz, and aquamarine.