May's birthstone is emerald, a lush deep green tied to renewal, growth, and abundance.
Emerald is among the richest greens in nature: deep, saturated, and slightly cool. It is the green that gave the color its most famous name.
The stone has long symbolised rebirth, fertility, and prosperity, fitting for a spring month. Its vivid depth makes it a jewel-tone anchor for elegant, lush palettes.
The palette
The colors
Colors that have their own encyclopedia page link to it; the rest show their exact hex.