Early 1900s Art Nouveau Enamel Diamond 14k Gold Brooch

Gorgeous art nouveau pin brooch crafted of 14k yellow gold (stamped "14k"). How beautiful is this piece. Features gorgeous luminous enamel details. Accented with a single natural round old cut diamond weighing approximately 1/10ct. Also 7 seed pearls (one is missing). Secures with a locking pin for wear. Measures approximately 1 1/2" in length. Weighs 3.9 grams.