Govind 015 Slate pencil Slate pencil EATABLE crunchy pencil with calcium added natural lime stone pencil  (100 Sticks)

Slate pencils contain calcium, which strengthens bones. It also removes the enamel coating from teeth. Consuming edible slate pencils could be a good option for those who suffer from calcium deficiency. A slate pencil was used to write on the slate board. It was made from a softer and lighter coloured stone such as shale or chalk. Usually, a piece of cloth or slate sponge was used to clean it and this was sometimes attached with a string to the bottom of the writing slate.