Necklace ID please

Ive got a collection of bits and pieces that arrived in auction lots. My hoard is getting too big so these are potentially on their way out but tbh I don’t know what they made of or if they are more interesting than I think as they are pretty ugly!. Do I get the prize for the ugliest Jewellery?!
1. Very odd necklace. Any ideas?. Quite lightweight but hard and inflexible.

2)Weird beads. Glass and no idea what the odd cream/ yellow ones are?Glass beads are pretty but overall not pleasing to the eye!. No clasp.

3) I quite like these. Just beads no clasp- like China?

 

And the last little delight-
4) Quite nicely carved on horn?


Thanks for any info as always

 

I thought orange peel?
Whatever it is I thought I ought to check before unceremoniously getting rid of it!

 

#1 looks like some type of bovine horn.

 

Can we get a shot of the entire piece on the one you said you "quite liked"? Just to get a sense of length, etc.

 

Horse hoof necklace, now there's a first. Whoever would think that would make a good necklace!

 

Here’s another photo. Thanks for your help

 

If you have an UV torch (black light) give it a try, the beads may be glowing green under it!
These look like Max Neiger uranium glass beads

 

You are so clever to find that!. The symbols are all the same,just different carvings. I will do some more googling now I have a lead.
Thankyou so much.

 

No I haven't got a UV light, it's on my list!.
I've never heard of those. I will go and google. Thankyou.

 

On the ones where you just added a photo of the whole piece-- quick question, are they hand knotted? They don't appear to be from the close-up, but maybe I'm just not seeing it correctly. If not hand knotted, how are they staying evenly separated?

 

See there an example and the glow is shown in pics:
https://www.etsy.com/listing/654571..._query=1920+s+neiger+beads&ref=sr_gallery-1-2

 

Having just googled MN I’m not entirely sure as the brown on these seems to go into the bead not just on the surface.
By the by I was looking at some other MN bits and they bear a resemblance to another bracelet that arrived in the same lot. What do you think? MN or just similar?

 

I think dyed/tinted bone

 

Very observant!. I've just had a look and there are no knots but they won't slide up the thread. Glue or will power?!

 

The MN glass beads hat that "patina" added in the recess, don't know how it was made, but it seems to resist normal wear, which paint wouldn't
For the bracelet... It could be, but costume joolies will know better than me