Check the listing for details. Geode Coaster Silicone Mold AU. Condition: New. Listed at 35.64 USD. FOUR GEODE SHAPE COASTER SILICONE MOLD Sent from Pacific Paradise Qld 4564 Australia This very unique silicone mold consists of four geode shaped coaster cavities a cute keychain heart. This high quality, white silicone mold has a very shiny surface and shiny sides. The natural geode curves gives the finished coasters a very beautiful look, similar to a real agate slice. The mold is 25cm (10") x 25cm (10"). The coasters measure about 11.5cm (4.6") wide with a depth of 6mm (1/4"). If you fill all the coasters and hearts to the top, the mold uses about 320g (10oz) of resin. NOTE: My silicone is heat resistant up to 120 degrees celscius (248 degrees fahrenheight). If you overheat the mold using your torch, you WILL melt the silicone and it will stick to the resin. This is not a fault with my mold, it is user error so please be careful using your heat gun or torch.