IS THIS MYAN STATUE PRE COLUMBIAN

HELLO ALL.....i purchased this at an estate sale approx 20 years ago..i know what im going to say does not mean much with authenticity but the man who passed on was a huge collector..the dealers went nuts in this house and i knew most of the dealers and what they purchased turned out to be authentic..the statue is a little over 8 inches tall and is easily over 10 pounds..its carved out of some kind of granite..its not showing in the photos but when in the sun light it sparkles..looks like theres quartz or maybe mica in this stone...i used very high powered magnifiers and i see no signs of machine tooling..i see no swirl marks or lines all going in one direction..i took some clear photos and im hoping you can see any red flags either way..my guess is this type of art is hard to authenticate but im hoping i can get enough info to decide whether or not to pursue it further...please ask questions...thx in advance for your help.....andy