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 21 is a socially and medically sound policy that helps parents, schools and law enforcement protect our youth from the potentially life-threatening effects of underage drinking." Choose Responsibility argues that scientific evidence supports the Amethyst Initiative's views and goals, and refutes some of MADD's past claims. Sanford Ungar, president of Goucher College and signee of the initiative argues that opponents should not fear because the Amethyst Initiative is about opening up the debate to improve alcohol policy. He brings about the misconception that they want to "polarize" the issue at hand, but instead wishes to find a better alternative to