That's a beautiful DTVT marble!
I see the seller ships FedEx, this means he/she will ship just before the latest drop off time in their area. That way the boxx won't have to be all day waiting to be picked up by the driver.
E.g. Where I work, our latest drop off is 6:45pm and 7:00pm at the main station. This hour varies from FedEx location to location.
Edit: If the seller packs properly they should arrive in double bags placed inside a box lined with styrofoam or other insulating material.