Since 1861, Gump's has been a destination for jewelry that is distinctive and timeless. To ensure each piece is created to our exacting standards, the expert in-house jewelry team at Gump's oversees every step of the production process. The result is a statement of pure elegance. London blue topaz, 4.70ctw. Sterling silver. 14-karat yellow gold posts. Pierced only. 1/4" diameter.