The main stone is a bright, violet-blue Tanzanite of 1.2 carats (Minimum) with a halo of diamonds and diamond shoulders, set in 18ct white gold (marked 750). Comes in it's original box with certificate. The Tanzanite measures 8.02mm x 6.1mm. Please see pictures of the certification for full details.I do my best to describe items fully and accurately. All my items come from a pet and smoke free home. I will always do my up most to post as quickly as possible.