Perfect example of my knowing an item and not needing the hallmark to help...
The above chain and enhancer was available in numerous gemstone choices on the Q for a few years.
Haven't checked lately to see if it's still available, but it is not a designer set.
It was sold on the Q during many gemstone and silver style shows and was just an in-house (QVC) item. I had purchased one option but personally didn't like the black oxidation on the chain.
It does have a Yurman-esque look but sadly it's not a designer item. The only thing that knowing about the hallmark on this piece would do for you or someone wanting tobuy is being able to know what company manufactured this well known Q item.
I did look at the other photos and don't recognize any of the pendants as specific QVC "named" designer pieces.
ie: None are Ripka or Ann King or Barbara Bixby, just to name a few...
Sorry. I'm sure you wanted them to be known designer pieces.
"When the power of love overcomes the love of power, the world will know PEACE" ~ Jimi Hendrix
A helpful decision maker: Ask yourself, "What would Cher do?"