Rainbow fluoriteshouldworkas follows: Good for theskin, mucous membranes,nerves, bones,bonespreserved fromdisease and osteoporosis, good for theteethjoints.Concentrationstone.Takesfright,test anxietyand restlessness.Promotesthe absorptionoflearned material.Promotesintuitionandconcentration Origin:England, Spain,Mexico, China, USA