The base of the pin is yellow gold

This incredible sapphire is of the highest possible quality

Marks: "14K ENGLAND R&B 585 Anchor" Stamped on the reverse

and Green Gold

Antique Victorian Onyx Cameo Seed Pearl Brooch Emerald Cut The base of the pinThis antique cameo is exquisitely made! The hammered 14k gold backing was forged by hand, and each small seed pearl was set by hand. The center stone is black and white onyx, expertly carved in the profile of a matron. Love this piece but want to make it more versatile, we here at Market Square Jewelers along with our master metalsmiths can convert this fantastic brooch into a necklace or pendant for an additional fee, please contact Alex for more