Amethyst and it can not be differentiated with absolute certainty without advanced gemmological testing (which is often cost-prohibitive). There is one test based on "Brazil law twinning" (a form of quartz twinning where right and left hand quartz structures are combined in a single crystal) which can be used to identify synthetic amethyst rather easily. It is possible to synthesize twinned amethyst, but this type is not available in large quantities in the market. Single-crystal quartz is very desirable in the industry, particularly for keeping the regular vibrations necessary for quartz movements in watches and clocks, which is where a lot
Amethyst Initiative the current drinking age. Radley Balko, of "Reason," wryly noted inconsistency opponents of the Amethyst Initiative believe that it "would be a "national tragedy" to, for example, allow 19- and 20-year-old men and women returning from Iraq and Afghanistan to have a beer in celebration of completing their tours of duty." Balko also noted research showing that underage drinking laws had not reduced highway deaths. In November 2008, the Student Senate at the University of Wisconsin–La Crosse rejected a proposal to urge that university's chancellor to sign the Amethyst Initiative. Supposedly the first such attempt by a student body to