Beautiful, 1960s glass pendant light - graded brown exterior with white glass on the inside (incamiciato*) and rosewood 'finial'. Probably designed by Jacob Eiler Bang (1899–1965) for Fog & Mørup with Holmegaard, Denmark.
*incamiciato: overlay lattimo glass (= milky looking glass) with a layer of transparent coloured glass - a technique invented in Murano, Venice.