demonstrates a hue shift in changing light
be gently heated to lighten or remove smoky hues
heat changes may create citrine or green quartz
for the 6th wedding anniversary
is an abundant gemstone and a well-recognized member
of the quartz family. Sometimes amethyst demonstrates
a slight shift in hue when subjected to light changes;
it may appear more bluish purple in daylight and
more reddish purple in incandescent light. Mined
in Brazil, Uraguay, and Namibia, amethyst may be
gently heated in order to lighten or remove smoky
hues from its color. However, abrupt heat changes
can create citrine or green quartz. Because of amethyst's
sensitivity to heat, steam cleaning should be avoided.
Amethyst has a hardness rating of 7 and good toughness.