... 1.Material: Natural black slate 2.Shape: Heart shape 3.Handwritten with white chalk 4.Can ... recycle many times 5.ECO-Friendly Blackboard marker in heart shape by natural slate Stone NameJOYPlace of OriginJiangxi, China ... (Mainland)MaterialSlate, Marble, granite,sandstone,natural stoneShaperectangle, square, heart, round, ovale,etc.ColorBlack,rusty, grey,white,natural colorProduct dimension10x10x0 ...