10 Pc Aquarium Rock Aventurine. Aquarium Safe, Natural Stone Iwagumi Aquascape, Cichlid Aquarium, Terrarium New/Unused; Green Aventurine -- Natural Stone! No Plastic! No Resin! Each Order Contains 10 or more Separate pieces you can stack and design any way you like! Total Weight 6 to 7 Pounds of Rock in each box. Actual sizes, color and shape of stones will vary because this is 100% Natural. These are small to medium sized loose pieces of Rock. No Silicone or Bonding agents included. A few examples are displayed- see pictures-- but the Aquascape is ultimately yours to Design and Create