BijanDiamonds.com Dictionary
Amethyst:
A purple variety of the quartz family, amethysts have long been featured in the crown jewels of royalty. These brilliant purple gemstones show highlights of lavender. These purple gems are the birthstone for February and several cultures believe that miraculous powers are attributed to this stone. It is also esteemed as a stone of friendship and it is considered one of the most beautiful crystal quartz.