Frosted Plastic Pierced Earrings

I call these sweet earrings the "root beer candy" earrings.  I really do not know much about them as they are unmarked, but I like them for their simple uniqueness.  I would say they were made in the 1960s and feature a silvertone pierced post with large frosted brown plastic shapes. 

I am wondering if these earrings are made of bakelite, an extremely collectible thermoset plastic made from phenol formaldehyde.  Like these earrings, bakelite is opaque.  Catalin is another similar plastic that is more translucent, and is often sold as bakelite.  True bakelite was made from 1907-1927 while Catalin was made from 1927 (when the Catalin Corporation purchased the patent of Bakelite) through the 1960s. 

Feel free to contact me if you are interested in purchasing this piece.  Questions, comments, and additional information are always appreciated.  My online shop on http://www.rubylane.com/ is coming soon.

Thank you to the following website(s) for the historical content of this blog post:

Vintage Jewelry Lane. Retrieved 6/8/2011 from http://vintagejewelrylane.com/information/bakelitetest.htm