This is a natural gemstone, Agate set that holds glasses or can be worn as a necklace. This also comes with a pair for earrings.
What this set does is allows you to both hear and see the spirit world. If you have spirits you want to hear and see then this piece would do that for you. You must be wearing the set for it to work.
You take the necklace part and use it to hold your glasses. If you don't wear them it isn't a problem. Get a pair of sun glasses or non prescription are fine too. This allows you to see. Wear the earrings to hear.
The natural stones that this set is made of was said to have the spilled blood of the watchers on them and it is said that is why it works. As far as is that part true I have no idea. I had this set in a box I have had for over 15 years from the traveler in NYC. This has been tested and works as described but for where or how it originated I'm just not sure. I could do a reading on it but with so many items as long as it is tested I'm fine with that. I do know that whomever made the set did it very well and it would be expensive to buy, more then what I'm charging.