We received our stone and thought it looked very glassy and felt weird. Ritani had told us they had to secure this from one of their partners in India. Before this, we had seen hundreds of diamonds in person in our search. Because of our suspicion, we took it to a diamond store, where they put it through their lab grown testing machine and it showed up as green color, or Cubic Zerconium (CZ). When compared to a lab grown diamond at the shop, that diamond was yellow color in the machine, indicating a fully lab grown diamond. We will be returning this and filing a complaint.