This is a matched string necklace of Millefiori African glass trade beads -- 33 beads.  The size is 9 mm square x 21 mm long approx. This necklace came from Ghana and is strung on the original sisal. Square beads are quite rare and to match up 33 beads was a big challenge. The age is approx. 130 - 150 years old.  Yes, there are a few chips.  These beads were handmade in Venice Italy.