This piece probably originated from a lotion, or cream jar of some kind. The neck, or rim, is clearly defined by banding. This is a particularly unusual and interesting ring. Milk glass is an opaque, or translucent, milk white or coloured glass, that can be blown or pressed into a wide variety of shapes. First made in Venice in the 16th century, colours include blue, pink, yellow, brown, black, and white. It was also used in highly decorative statuette artwork, often using many different colours on the same piece.
2.5cm length x 2.0cm width x 0.75cm height