Diameter about 1.9 as pictured, and chain drop is 13 without a clasp. Kalevala Koru is the largest jeweler in Finland. Inspired by the Finnish epic tale Kalevala, the company was established in 1937 by Finnish women to pay tribute to Finnish culture. KK is on the leading edge of ecological practices in their manufacturing process. Heirloom piece from an almost century old cutting edge company.