This is not required for students of EPS 2

GEM	BEGINING COLOR	GOES TO	FINAL COLOR
BERYL	Colorless		Yellow
	Blue		Green
"Maxie type"	Pale or colorless		Blue (unstable)
CORUNDUM	Colorless		Yellow
	Pink		Padparadscha
DIAMOND	Colorless or pale to yellow and brown		Green or blue (with heating turns yellow, orange, brown, pink and red)
PEARL	Light colors		Gray, brown, "blue" or "black"
QUARTZ	Colorless to yellow or pale green		Brown, amethyst, "smoky" or rose
SPODUMENE	Colorless to pink		Orange, yellow, green or pink
TOPAZ	Yellow, orange		Intensifies color
	Colorless or pale blue		Brown, blue (which may require heat), or green
TOURMALINE	Colorless to pale colors		Yellow, brown, pink, red, bicolor green-red
	Blue		Purple
ZIRCON	Colorless		Brown to red

Adapted from Nassau (1984)