Help to indentify and date vintage necklaces

I could use your help to identify and date these three vintage necklaces. They're similar in style and I feel that they may be from the same time period. Any help is greatly appreciated.

 

Welcome @Lilaud14

@Any Jewelry @Ownedbybear @evelyb30 I think this is your department

 

Welcome @Lilaud14.
All three necklaces were made in India.
The top one was made in Nagaland in Northeast India, so it is a traditional and tribal necklace. The beads are brass and glass.
These are often sold as coral necklaces, but though the beads look like coral, they are glass.
There are many different ethnic groups in Nagaland, every group has its own style.

The other two were inspired by Naga necklaces, but they are costume. They were popular in the 1970s-80s, but probably later as well. The other members who were tagged can probably give a more accurate time frame.