Aztec Mayan Carved Stone Wall Hanging /Plaque. Read Detail: NO IDEA ??

Description

I have absolutely no idea about this piece. It looks like an Aztec Mayan piece to me. I don't know what it is made of. Feels like a pottery?? It is fairly heavy at a pound, four ounces. It's almost 8 1/2" x 4 1/2" x 1/2". Not sure of age. It could use a toothbrush cleaning to get in the grooves. Please, if you know anything about this piece, feel free to contact me!
FedEx requires street address, not P.O. box. I mainly use FedEx for distance shipping. If same price, will go Priority mail.
Please ask if you have any questions before bidding/buying. Sales are final, purchase is as-is. No returns/refunds. Thanks for checking out my stuff. Have a great day:)
Feedback will be gladly given once mine received.
Payment expected within 3 days. Notify me if you need more time.