TWO (Czech?) Beautiful Vintage Long Length Necklaces with Blue-tone Glass Beads

The darker two-tone blue (first 5 pictures) is 35” and has a few flea bites here and there but otherwise in fantastic vintage condition. The lighter blue necklace (last 5 pictures) is 23” and features round glass beads which are all knotted between them also in great vintage condition These have a bit of weight to them! Possibly Czech glass?