Are the speckled beads in the necklace I own Chinese?

They fall into two types - one with blue crumbs, the other with predominantly green. The crumbs in both types seem to be fragments of cane. The beads with blue crumbs also have tiny bits of aventurine cane.

I did some rather rocky photos comparing these beads with a strand of what I am told was determined to be "Boshan" glass beads. These also have tiny speckles of aventurine.

Thoughts?