Mangan Jewelers is a fine jewelry company located at 6801 Whittier Ave. Suite 101, McLean, Virginia, United States. We are family owned and operated, serving the Washington DC metro area for over 37 years. We offer the finest in ideal cut diamonds and exquisite gemstones. Appraisals are done by a Certified Gemologist Appraiser and a Master Valuer. Both are GIA graduates. We are proud to be members of the American Gem Society, a stamp of approval you can trust. We offer expert watch repairs, jewelry restoration and custom designs by a master goldsmith. We also buy and sell vintage jewelry, estate pieces, gold, platinum and diamonds.