It is truly getting difficult to assert authenticity from photographs! I'll attach some more detailed images to show (perhaps) more subtlety in the glass.
The beads were purchased in a shop called The Acacia Tree in KL. It was (I believe) a reputable shop and one I visited to handle and learn about beads and textiles. The owner was patient!
It is good to know when and where and how copies of and tributes to ancient beads are made. We seem to be in an age where just about anything can be replicated.
Cheers!