We have selected a wide selection of decorative stone, rocks and driftwood for both beginner and experienced hobbyists. All-natural and non-toxic, and most are used in our own setups and outworlds.
Lava rocks are beautiful, porous rocks with an interesting texture (and often something interesting, like a small geode-esque quartz ball inside). We sell smaller accents (<3" pieces) which are more suitable for the needs of ant-keepers, but can provide larger pieces on demand.
For a 10cm x 10cm x 10cm cube, 0.1-0.3 lb of rock can be used (depending on the extent of decoration)