These were used in jewelry with Marner's own branding marked most often Jewels by Julio or Julio Marcella, according to information provided in an article by Cheri Van Hoover on MilkyWayJewels.com. They were also used in pieces Marner made (referred to as "jobbing" in the jewelry business) for other brands such as Kramer, Hobe' and Hattie Carnegie.
These glass stones are seen in a variety of colors including pink and various shades of green, some with swirls of copper like those shown here having a similar look to Venetian aventurine beads. Marner closed its doors in 1957, so jewelry made with these glass stones can most often be dated to the 1950s.
See next photo for close view of matching earrings signed "Hobe'."
