Use the ribtex silicone coaster mould with ribtex uv resin to create natural geode shaped coasters add in ribtex stone chunks for a natural look or value craft gold foil for that extra shine. The mould is made of a durable silicone and is flexible and resistant to tearing. Once cured uv resin will be easily released from moulds. These are suitable for creating with both uv resin and epoxy resin.