This is a birch necklace from the Finnish brand Aarikka. I received it as a souvenir but never had the chance to wear it, so it has been stored. It's new, unused, and still has the tag. An elastic string runs through the birch beads, so it should fit most people. It measures 21cm when laid flat, but can stretch to over 40cm without breaking the string. Aarikka, Finland, birch, necklace