http://www.coticule.be/the-cafeteria/message/9987.html

I think it is mentioned at "coticule.be" that "La veine Lorraine" or "La rouge" or "Salm Rouge" is a purplish
BBW layer (with "garnets" but it is not a coti) between the coti layer "Les Petas" and the coti layer "L'Allemande"

Kindest regards