Instructions for the National Geographic Crystal Growing Kit can be found as a free download through sbdirect.biz or trendstoys.co.uk. Both sites require that visitors create a free account first to download the instructions. The National Geographic customer service line may also help. They can be reached at 1-888-557-4450.
The original crystal growing kit came with a 32-page color booklet explaining each component as well as instructions for combining them to make crystals. Safety precautions outlined in the booklet include protecting hands and skin against direct contact with chemicals, protecting the eyes when mixing chemicals and avoiding ingestion of anything in the kit.