In this mixed lot are some very nice items. 

The first item is a pair of earrings set with deep red stones (glass) they are properly prong set. They addorn what I'm calling dirigible propellers. The props are six bladed and very Art Deco in design. The stones are four small round stones surrounding the center pillow cut stone, all mounted above the propellers. I included them so your girlfriend would let you get the rest of the stuff. 

Then there are the "Monet" buckle clip and the pin. These are a matched pattern design that look very much like pistons on an old radial engine. These pieces are classic "Monet" very sturdy and the triple plating is in fantastic shape. The radial pin is approximately 1 7/8 in. in dia.

Next is what I call the Dynamo pin, for obvious reasons. It is six pieces of stamped brass soldered together to create this arched ribbed shape, so even though it looks heavy, it is not. It has a pin back fastener so it will be easy to attach. This piece is approximately 2 3/8ths by 1 1/4 by 1 in.

Then we have the silver Barbell style Jabot pin. It repeats the ribbed design found on the other pieces in this group. It is not stamped, but the metal is non-ferrous and may very well be silver, most likely it is nickel silver. This pin is approximately 1 7/8 in. from end to end.

Then finally, we have the twin Barbell style brass pins. The balls on these pins are approximately 1/2 & 9/16ths in. respectively. They are hollow, so they look heavier than they are.

These pins are approximately 3 1/4 in. end to end.

So there you have it, an awesome collection of accessories to help dress up, and add details to your Steampunk ensemble.