Actually, Alexa Lixfeld, a designer who hails from Hamberg, is rather well known for creating perfume bottles that have concrete lids and seals — and no worries. It is completely safe and stable.
Not only are the designs quite awesome, but the fragrances are fantastic as well. One type features oriental scents with hints of rosemary; another offers the scent of sandalwood; and a third provides the cool, feminine scents of jasmine and lilies.
Plus, of course, you can always carry your perfume with you and use it to defend yourself, should the need arise!