This is a vintage faux ivory (resin of some kind - or maybe stone/alabaster?) It's heavy and durable. The scene depicted in the table top appears to be a romantic, horse-drawn royal carriage ride through a lovely garden featuring a horse, driver, royal couple and two servants following the carriage. Very appealing and interesting piece!
The underside of the table top has a mark where adhesive affixed this top to its previous base. There is a lip around the top to hold in a round glass top to protect the carved area. Glass is not included, but would be 16.25" in diameter.
The table top is 18" in diameter and 1" thick.
Weight: about 9 pounds