Thus, these beads may be the reproductions. Haha, it's ok. They just look so beautiful.The dimensions are about 8mm to 9mm. I remenber there is a story about these beads, something about the wild pig, and "Vavui" is the beads' name in my clan language, and wild pig is its meaning. My grandma passed away for two decades. It's a pity that I can't get the further details about these beads anymore. Anyway, thanks for your helpful answers.