Tuesday’s Treasure: is this a set?

While rummaging through the jewelry looking for items for a display, I found a bunch of pieces in the Costume Museum of Canada’s collection that caused me to wonder, “is this a set? A Trend?  What?”

There are earrings:2

I can’t begin to tell you what they are made of.  There is a bracelet labeled 1850.5

And a choker:3

The choker is labeled 1840 and the cameos are attached to a black velvet band. My guess that velvet isn’t original.

They are close but not quite  the same, are they? And the fact that two of the pieces are labeled as being 10 years apart implies they are not a set.  And I realize cameos have been popular, or trendy, off and on for ages, so it isn’t unheard of for there to be several different yet similar images that are classified as cameos but not sets.  It is just I’ve never seen them in these earthy, almost clay like tones.  If these were my pieces, and not the property of the museum, I would wear them like a set.  But then again, I don’t really like these colors.  What do you think?