round brilliant is just a style of cutting, actually it is the most common cutting for round diamond. on the gia, it will tell you the finish is excellent, good or....
as 小叻 said, you should look at the gia, which will tell you all the details.
if you buy it from wholesaler or retailer, you can choose to buy the one with gia or w/out gia. the one w/out gia usually is cheaper. but after you purchased, you can send back for certification, just few hundreds dollars, but take weeks.
if you know someone in the industry, the cheapest way to buy it is from the exhibition. |