Vintage ring has a shining iridescent greenish yellow abalone center with an angular asymmetrical sterling silver setting. 

Marking ▻ "Ster" and "Rub"
Size ▻ 7  
Stats ▻ 3/4" high in center | 1/16" wide band
Condition ▻ Excellent with some darkened patina to the sterling (can be polished, but looks great tarnished too)

This is a one of a kind find, there's only 1
E-mail [email protected] for any questions ♡