This is a Charriol 18 kt. Yellow Gold & Steel Citrine & 24 Diamond Ring in a size 7. Retails for $750.00

 The band part of the ring is steel cable rope chain. The Citrine is facset cut on top.

The 24 Diamonds & the Citrine are set in 18 kt. Yellow Gold. 

The Ring is in very good condition.

I have matching Citrine earring from Charriol up for sale