It looks somewhat like a hemostat. If it can grab hold of something, it could possibly be inserted in something narrow to turn it inside out or vice-versa.

I would say some sort f medical tool

Thanks for posting this. I have a pair of scissors similar to this and about all they are good for is grabbing things...except thread!

Could it be a type of Pliers for Jewellery making?

They look very much like vintage French scissors, possibly even for hairdressing.
The blades look like they have an edge to them, have you ever tried sharpening them?

I have purchased many vintage scissors that are so well used they are completely dull, until I put my sharpening skills to use on them, only the worst quality steel can't be brought back into use.

Just a suggestion.
hugs n roses, Meganne

After further investigation there are two other possibilities....
the first two images are listed as antique embroidery scissors;
the 3rd and 4th images are listed as Victorian Grape scissors..... note the similarity of the blades......

Now I have no idea how they Victorian Brits would have used grape scissors or why embroidery scissors wouldn't be sharpened, so I can only think yours have dulled over time or perhaps they are grape scissors?????
Oh and I personally think the scissors in picture one are probably grape scissors, judging by the lavish engraving. :-)