Quartz is found in abundance from every corner of the earth. In its purest form, quartz is colorless, but is most prized for its purple variety- amethyst. Purple has long been considered a royal color, so it is not surprising that amethyst has been so much in demand throughout history. Fine amethysts are featured in the British Crown Jewels and were also a favorite of Catherine the Great and Egyptian royalty. Great thinkers like Leonardo da Vinci believed that amethyst could dissipate evil thoughts and quicken the intelligence. Amethyst, the traditional birthstone for the month of February, is available in small and large sizes, although as with all gemstones, very large sizes in rich, deep colors have always been rare. Designers celebrate amethyst as the ideal choice for jewelry because of its regal color, variety of sizes and shapes, affordability and wide tonal range from light to dark purple. Brazil is the primary source of amethyst, and Zambia is a significant source as well. Darker hues of amethyst are rarely enhanced to perfect their color, although some varieties do respond well to heat enhancement. I can tell you how to best care for your amethyst.