These candle trays are handmade with Jesmonite.  Jesmonite is a non toxic resin that has a similar finish to concrete but is much lighter.  These tray also make great Coasters and Trinket Tray.  They are in 2 shapes, Hexagon and square.  Colour range is Aqua, Bubble Gum, Mint and Ocean Blue.
 
Also the beautiful leaf design Coaster which only comes in Aqua at the moment.