Hallmark(s): "NH", "Na Hoku", "Pearl Factory", "PF"
Information: Na Hoku was founded in 1924, in Hawaii. It has since opened locations throughout the continental United States, with many Hawaii and Florida locations. Also does business as "Pearl Factory". Works primarily in gold, silver and platinum.
Hallmark(s): "Nicolis Cola", "166 VI"
Information: Italian jeweler who specializes in handmade gold jewelry. He is the 166th registered jeweler in Vicenza, Italy.