Vintage Lemon Citrine Cocktail Ring in Gold- Size 6.75

Lovely Vintage Lemon Citrine Cocktail Ring in Gold- Size 6.75. I think the ring is gold plated. There appears to be a marking, but I can't make out what it says. Citrine is surrounded by tiny crystals. In very good Vintage condition, with minor wear to the band, as seen in photos.