One of a kind styling! Absolutely Gorgeous Princess High quality Australian opal, Amethyst Cocktail Ring.
Opal is October  Birthstone.

 Exact Carat Total Weight:    ( Silver + Stone)  55.90 ct,   11.18 gram.
   
Shape:   Vintage! Big! Beautiful! Natural flashing High Quality black Australian fire Opal 18.0 mm x 13.0 mm x 6.0 mm = 19.60 ct. 
Color:             Black flashing (As Seen In Picture )
Clarity:           Opaque.
Luster:           Beautiful
Treatment:     Unheated.
Origin:            Australian  
Hardness:      6.0.
Ring Size;      6.25
 Face Ring :   23.0 mm x 19.0 mm.
                 
Item is in excellent condition, and it can be great gift to your daughter, yourself  or someone you love.