I finally received a reply from Christies about a month ago and the email said something along the lines of "the item does not meet our guidelines". They did not ask for pictures or more info, so Im not sure who else to take the item to.
There does appear to be cracks but they are veins of different colors, it doesnt seem to have glue or any damage. The original purchase was in the 40s-50s, apparently my great grand father frequently purchased artifacts from around the world and sent them home, many were donated to universities and museums so I would highly doubt it is a reproduction. .
Like i said back in January, i seriously doubt it's that old and the original auctioneer's appraisal seems...wrong. Christies e-mail seems to confirm this
However, no harm in getting another opinion