This is an absolutely beautiful Victorian 14k yellow gold ring.
Circa 1900-1920s
It is an amethyst stone with seed pearls around it and blue enamel around top and down sides. Some of the enameling has worn away due to age, which you could possibly have redone. I estimate the stone is 13mm in diameter estim. 5.00 carats..
The marking inside ring has worn away, but you still could see 585( Europe markings),it means 14k.
It was tested as 14k gold too.
The size is 4 1/4( sizable).