Dainty 14k gold chain with faceted crystal

Adorable faceted crystal pendant on fine 14k yellow gold 15-inch choker-length chain. Seller described the stone as an aquamarine, but to me it appears clear, not blue. 14k stamped on the chain clasp. Can’t see a stamp on the pendant, but Posher who sold it to me said the setting is 14k gold. Hasn’t been tested.