Vintage Pierre Cardin Gold plated GEMINI Zodiac Pendant Necklace with diamond

Vintage Pierre Cardin GEMINI pendant necklace with diamond. Can move the stone to the day of birth! Upon checking other product descriptions this item is 22K Gold plated and has a genuine diamond in the dial but it is not written on the piece. Condition is consistent with age. Some scuffs and scratches on metal. See pictures for details and approximate measurements. Pet friendly/smoke free home Questions?? Just ask!