Ladies Halo Design Diamond and Tanzanite Ring 
Center Natural Oval brilliant  cut Tanzanite Stone . Color ranges blue , violet ,lavender   Origin Tanzania   4.14 ct   VS clarity   GIA certificate no 1156061452 .  Surrounded with 12 round brilliant cut diamonds. 1.05cttw.  Diamonds are  VVS   clarity   F  color . The ring   made with 18 karat white gold. Size  6.1/2