I have a bowl filled with these beautiful African trade bead necklaces. I love the indigo color. I redecorated so I am letting them go. I have one set like those.. They are all glassn. One is Millefiore with yellow flowers and the other is black with blue splotches.  They are on raffia, are wrapped in the back. Measure 26” long. Two of them weigh over 20 grams.