VTG Black Onyx 10k Gold Diamond Angel Ring sz 4.5

Wow -- what a unique and beautiful ring! A black onyx stone is prong-set in gold; upon this is a figure of an angel in profile. The angel reaches skyward, raising a diamond. The gold is 10K and the ring is also hallmarked with the Maker's Mark of SR. The ring is sized approximately 4.5. The onyx stone measures approximately 13.80 mm by 9.60 mm. Fantastic and unusual design! This is a pre-loved item in very good condition. Pre-owned items may show signs of wear and customary signs of age and are sold AS IS. I do my best to describe the item and what I know of its history; the pictures are part of the description.