This lovely authentic ring is by Judith Ripka, it is crafted from 18k yellow gold featuring a large cushion shape diamond cut black onyx in the center held securely with a 3 petals diamond set floral prong on each corner of the onyx. Around the shank and along the tapered shoulders with pave set black diamonds.  The ring is signed Judith Ripka 18k

Main Stone:  white and black diamonds

Secondary stone:  black onyx 

Material:  18k yellow gold

Measurement:  top; 20mm long x 18mm wide x 10mm high

Ring Size:   4.5

Weight: 14.8 grams