Howlite is a soft white borate mineral veined with fine gray webbing — snow with pencil lines. Often imitating turquoise when dyed elsewhere, we sell it as itself: honest, calm and graphic. California and Canada are traditional sources; hardness 3.5.GEMIC Institute's howlites are natural and undyed, certified in our Siem Reap laboratory, photographed piece by piece. Unique stones; worldwide tracked shipping, 30-day returns.