Concrete Mold Mosaic Stone Mold MS 862. Concrete Plaster Wall Concrete Stone Veneer Mold. Mosaic Mold Globmarble supplies professional grade casting molds which reproduce the structure and relief of natural stone to the smallest details. GlobMarble molds are designed to produce many parts and will last you many years by using a little common sense and incorporating a maintenance plan. Mold size  2 SQ.FT.(0.20m2) approximate. Measurements - 25 X 13 X 1 (63cm X 33cm X 2 cm) Mold sections  1 Section dimensions: Approx. size of Section 23 1/2 X 12 X 1/2 (59.5cm X 30cm X 1.5 cm). HOW TO MAKE CONCRETE STONE: Apply release (can be used liquid soap). Mix concrete per instruction, add colors, vibrate the mold lightly to remove an air bubbles, remove the stone in 24 hours.