Tanzanite and diamond pendant

This gorgeous pendant features a fancy cushion cut tanzanite set in the center within a four claw mount. Surrounded with a halo of round brilliant cut diamonds with diamonds set on the bale. All 18ct white gold. Interchangeable 18ct white gold, 18 inch long chain with additional loop for adjustemnt into 16 inch. 
Pendant measures 9mm x 8mm, not including the bale.