How to choose the best quartz nail

Purity – other tend to use non pure quartz or weld glass joints to the quartz nail heads.  Why Choose 710 Life Quartz?  99.999% pure quartz is as close to 100% pure you can ever find.  Our factory makes some of the finest purest quartz on the planet.  There are several tests you can do.  Lab tests are the most accurate but you can always perform some basic tests on your other brand nails at home.  All you need is a torch and cold water