Personalized Cockatiel Memorial Stone Grave Marker 6 x 6 Inch Memorial Stone. This cute bird engraved tumbled edged slate measures 6 X 6 X 1/2 inches. I will customize this pet memorial on this slate stone with the name of your pet and a picture of a cockatiel bird and the dates. Slates vary in color. Just provide your pet's name and/or date if needed in the Comments Section during checkout.