February's birthstone is amethyst, a clear violet purple associated with calm, clarity, and sobriety of mind.
Amethyst is a purple quartz that runs from pale lilac to deep grape. The mid violet is its signature: cool, contemplative, and long considered the most regal of the quartz colors.
The stone has stood for clear-headedness since antiquity, when it was believed to guard against overindulgence. Today its violet still carries associations with calm, wisdom, and spiritual focus.
The palette
The colors
Colors that have their own encyclopedia page link to it; the rest show their exact hex.