The name supposedly comes from what the French miners of the past called it ?bleu-jaune? meaning blue-yellow. It?s reputedly the most expensive and prized fluorite in the world. Roman legend says that drinking alcoholic beverages from cups or bowls of blue john kept away drunkenness. Metaphysically, Blue John does have the properties of fluorite in general. Additionally, it is especially good for bringing succour and relief to sensitives and mediums who give too much or take too much in. It is said to bring renewal and energy, as well as strength, health and well-being.