Page "Amethyst" Paragraph 2

Amethyst occurs in primary hues from a light pinkish violet to a deep purple.

Amethyst may exhibit one or both secondary hues, red and blue.

The ideal grade is called " Deep Siberian " and has a primary purple hue of around 75 – 80 %, with 15 – 20 % blue and ( depending on the light source ) red secondary hues.

Green quartz is sometimes incorrectly called green amethyst, which is an actual misnomer and not an acceptable name for the material, the proper terminology being Prasiolite.

It is actually against FTC Guidelines to call prasiolite green amethyst.

Other names for green quartz are vermarine, greened amethyst, or lime citrine.