Platinum Cherub Ring Identification

[humingbird1]

This ring belonged to my grandmother.  It looks citrine in color with etched cherubs inside.  I believe it to be platiinum with small diamonds on each side.  The back is flat and has a silver mirror like finish.  The initials are REG or RFG.  Does anyone know anything about this ring - era, style, maker etc.   Thank you.

[rixstuff]

The carving style is intaglio (the opposite of cameo) and it is frequently done on crystal gemstones so yes it could be citrine or yellow topaz or even a yellow sapphire.  SUPER LUCKY FIND!

[humingbird1]

Veryhelpful information - thanks so much.