Help to identify this jewls. Is old?

Looks like Chinese Minorities jewellery.
The one with the large disc has a lobster clasp, which means it is late 20th century at the earliest. I suspect the others aren't very old either.

There are other reasons for buying jewellery, but if you are looking for antiques, these aren't antique.

 

Looks like a modern decorators shadow box display with replica Tibetan or some other ethnicity pieces.

 

The Chinese love making shadow boxes of related or even unrelated objects.

Not replica, and not Tibetan, but probably Chinese Minorities, which is an official term for non-Han Chinese with specific traditions, like the Miao.
The Chinese Minorities still make a lot of jewellery. It is an ongoing tradition, so they're not replicas.

 

For reference, Tibetan and related Himalayan jewellery:

https://www.antiquers.com/threads/tibetan-jewellery-reference.58682/

As you can see, the style is very different from the jewellery in this shadow box.

 

I love the shadow box! Its a really decorative piece and a nice eyecatcher.
The jewelry forms a pleasant unity.
Someone put some good tought in it.