hi new here and im soon to propose once i get the ring....ok here''''s the question: my friends mother is really good friends with a diamond wholesaler?? (she goes to NYC to get diamonds and sells them to the jewelers in our surrounding area)....im gonna meet up with her tomorrow to see some diamonds she has....now should she be cheaper than a jewelery store or no matter what it''''ll all be the same?? (she only deals with GIA, so i trust her).....also i went to a jeweler (a friend of a friend) he showed me a 1.53 H SI2 RB triple excellent it was $10,200 is that a good price??....thanks in advance