CITRINE is the birthstone of November. As you guessed it, it is called Citrine because of it's strong yellow (lemon) color. Citrine is a type of quartz and is similar to Amethyst. Citrine is very scarce and did not come to notoriety till the Romans.
Whitney Alexandrite (G10613) from the National Gem Collection The spectacular 17.08-carat Whitney Alexandrite appears a raspberry color under incandescent light and a teal (green-blue) color when illuminated by daylight. Photo by Chip Clark