I was wondering if anyone has dealt with a company in Vienna, Virginia called IGS Diamonds Inc. It''s run by a young man, Ed Czarnetzky. He receives some services from his father who is an ASA appraiser. They both seem very knowledgable and nice. I am just about ready to purchase and was still contemplating buying through the web from someone line Whiteflash or from a local retailer. I know there are pluses & minuses for both. Any thoughts?