genuine 3000+ years old agate /dzi suleimani beads

I am trying to find out more information about my two items and how much they are worth.

The bracelet weighs 25 grams and the necklace weighs 20 grams.
They are over 3000 years old and auctioneers in London have stated is a genuine agate suleimani beads. seen from the pictures
The necklace has something known as the eye, which can be seen from the photos.
They are very popular amongst Buddhists in various areas of china, which is why I am emailing on this site.
Both items are very smooth and shine in the light. They are really beautiful and I have never seen anything like it.
I hope all you specialists out there can tell me more and how much it may be worth.

Thank you