With its origins in 16th century Venice, milk glass comes in a range of colors, among them white, pink, green, and yellow. The white kind, often seen at estate sales today, became popular during the Victorian era. At the time, it was seen as a cheaper alternative to porcelain. Due to wide-spread production in the 50s and 60s, mid-century pieces from companies like Fenton, Westmoreland and Anchor Hocking are readily available today. One way to make sure that a piece is the real deal (60’s and earlier) is to hold it up to the light. Antique milk glass was made with iridized salts, and this produces a halo effect of iridescent reds, blues and greens.