Traditionally, only four gemstones in the world are considered precious: diamonds, sapphires, rubies, and emeralds. This guide explores the characteristics of each of the four precious gems, and also looks at the key differences and similarities between precious and semi-precious stones.
Learn all about the birthstones by month. This informative guide covers the characteristics, colors, value, and beliefs surrounding each birthstone. You’ll also learn how the birthstone tradition started, who decides which month gets what stone, and why some months have multiple gems.