I am looking at some stones for a pendant. They recieve an excellent cut rating from their GIA reports but score 4.5 to 5.5 on the HCA. The price is a little under $6000 for a 1.25 plus stone.....Can go smaller in size to get a better stone but wonder if with a halo I will really notice the difference between a stone scoring below the ideal "2" and a 4 or a 5????Especially since this is for a pendant????