Thanks for another interesting thread.
As one of the great uninitiated into this realm of stone beads I succumbed to an beautiful black hard-stone tube bead in Thailand last summer.
It resembles your bead and as the story goes it came from Tsakli, a couple hours north of Bangkok.. Now I see this variety of bead came from a wide area, cultural periods and accurate identification can be difficult.
Assuming this was found in Thailand would it have been manufactured there and what period would it likely be? Length: 5 3/4"

Thanks // bb