In a mixing bowl, combine baking soda and cornstarch.
Gradually add water to the mixture until it reaches a moldable consistency.
Stir in your chosen essential oils to scent the mixture.
If using, add food coloring and mica powder or glitter to the mixture.
Scoop the mixture into silicone molds and shape them as desired.
Allow the stones to dry in a cool, dry spot for at least 2 hours.
Store in a cool, dry place away from direct sunlight.
To refresh scent, add a few drops of essential oil weekly.
For gifting, wrap stones in decorative paper or place in organza bags.
