A quadruple-distillation process made Crystal Head as pure as vodka can be, but the quest for an almost mystical purity continued. As a final stage, the liquid was filtered through 500-million year-old crystals known as Herkimer diamonds. These quartz crystals are found in very few places in the world, including Herkimer, New York and regions in Tibet and Afghanistan. Perhaps because they share the raw material from which the original crystal heads were carved, they are thought to have similar spiritual qualities.A quadruple-distillation process made Crystal Head as pure as vodka can be, but the quest for an almost mystical purity continued. As a final stage, the liquid was filtered through 500-million year-old crystals known as Herkimer diamonds. These quartz crystals are found in very few places in the world, including Herkimer, New York and regions in Tibet and Afghanistan. Perhaps because they share the raw material from which the original crystal heads were carved, they are thought to have similar spiritual qualities.A quadruple-distillation process made Crystal Head as pure as vodka can be, but the quest for an almost mystical purity continued. As a final stage, the liquid was filtered through 500-million year-old crystals known as Herkimer diamonds. These quartz crystals are found in very few places in the world, including Herkimer, New York and regions in Tibet and Afghanistan. Perhaps because they share the raw material from which the original crystal heads were carved, they are thought to have similar spiritual qualities.Dan Akroyd says - "Crystal Head vodka is the pure pleasure choice for consumers who wish to treat themselves, step up, and enjoy a finer vodka. Our beverage consists of the proprietary mash and the deep glacial aquifer Newfoundland water - and that's it! 
Distiller Note - "Our vodka is thrice filtered through charcoal and then thrice filtered through Herkimer diamonds. (search Griffiss Air Force base, Rome, New York). Many common vodka producers add industrial oils in an attempt to attain satiny, velvety smoothness. This often results in an artificial, viscous mouth feel. There are zero additives in Crystal Head vodka - no glycol (an ingredient for engine anti-freeze); no citrus oil (used in its raw form as an insect exterminant); and no raw sugar (finely produced vodka does not need any sugar). Tasting notes remarked on a "vanilla, sweet flavor, dry, crisp, with a kick of heat off the finish, making it simply unlike any other vodka."