JJ is a registered trademark that stands for "Jonette Jewelry Company". Jonette Jewelry was a family-owned business that made collectible costume jewelry for over 60 years. When World War II started they stopped their production. They began using the name "Jonette Jewelry" after the war was over. In 1970, they started using the copyright "JJ" stamp on all pieces made. In 1986 they registered the popular Artifacts mark.
Jonette Jewelry Co. CLOSED THEIR DOORS in 2006 after 69 years in business