An antique Edwardian sterling silver foil-backed paste flower necklace. Circa 1900. Jewelry made with paste stones became especially popular in the eighteenth and nineteenth centuries. The growing middle class wore paste because it was affordable and attractive while the upper classes wore it as an alternative to their precious jewels when they traveled. Early paste was highly refractive glass used to imitate diamonds. True old paste is usually foil-backed to increase its sparkle.