Dunhill have released an exclusive BlackBerry case made of stingray skin. Stingray skin was used 18th century by Samurai’s as handles for their Katanas (swords). The unique property of stingray skin is that it is extremely strong and resistant to wear and tear. More recently Swiss jeweler and watchmaker De Grisogono has pioneered the use of stingray skin incorporating it into watch straps and jewelry.