The sciency bit...fossilised wood (sometimes also called agatised wood) is created when a tree dies and silicon dioxide forms in place of the wood as it degrades until what is left isn't wood but quartz. This crystal is definitely linked with our ancestors and allows a connection to ancient energy and is also good for past life work. It teaches us patience and helps heal physical and emotional issues by working with the root and sacral chakras. And of course because it was originally part of a tree it is excellent for grounding and earth magic. It also helps us to respect and work with the environment around us. Working with fossilised wood can also help increase our happiness and the longevity of any situation. As the crystal has gone through changes it is also excellent for working with transformation. It can help you feel safe and secure and bring about a feeling of peace and calm.