Would the Black lamp worked beads on the right be a variation on the black with white what are called "Dog Teeth"/"Dog Tooth" beads, which I believe are Venetian.
Good spot on the India Stringing- more vexing, for sure..
Or a mini Melon-type bead not Venetian, perhaps Indonesian, and more related to these..below?
eBay example shown for illustration purposes, not affiliated with Seller. Described as " Antique Very Old! Naga Land Turquoise Tone Melon Glass Bead Bead Necklace".
Bead lover, collector since Age 15, semi-retired had wholesale/retail bead, folk art, tribal art store Lost and Found Gallery for 25 yrs. in DT Greensboro, NC