What is the pendant stone in Marvel's Shang Chi?

[737liz]

So, I just watched Shang Chi, the Marvel movie. And there is no clear shot of the pendants worn by the siblings. I assumed it was Maw Sit Sit jade. But then, when I turned to the almighty google, there were references to Emerald, Aventurine, basically anything remotely green but never Maw Sit Sit. Anyone else have a hunch as to what it was/was supposed to be? My husband git tired of me yelling 'pause' 'rewind' and 'zoom in' every time it was in frame. Apologies if this should be moved to Hangouts. I was unsure of where it belonged.