Vintage J&L Hartzberg 14K P Chain Necklace & Prong Set Orange Stone Pendant

Necklace: 16" L Marked "14KP" with a hallmark of an H in a diamond, which I believe is J&L Hartzberg Pendant: .325" H x .25" W Marked "14K" Pendant was acid tested. Chain was not due to its delicate nature. I'm not sure if the pendant is original to the necklace or an add on as it does not have the same mark as the necklace.