The size and color of both beads do not seem consistent with Venetian beads - so I'm puzzled now.
On the one with white cross hatching -I would expect on an antique bead that the white glass would degrade differently than the blue glass, but these white lines look similar to the background color in wear. The surface texture looks similar to that of beads etched to remove surface gloss.
Would really be interesting to handle these beads.

No other info as to where and when they were collected?