David Yurman Noblesse 8X10 Black Onyx Stone Surrounded by Diamonds Ring Size 6 3/8
My Internet research found one ot these priced at $1175 however the most comparable at Neiman-Marcus at retail is $850-$900.  Perhaps this model is retired?
Diamond: 0.21tcw
 
Signed
Condition is Pre-owned
Comes with Original DY pouch
Shipped with USPS First Class Package. INSURANCE INCLUDED.