Strictly speaking the precious stones are only seven in number—the diamond, the pearl, the ruby, the sapphire, the emerald, the oriental catseye, and the alexandrite; but to these are often added the so-called semi-precious stones—such as the amethyst, the topaz, the tourmaline, the aquamarine, the chrysoprase, the ...
What are the 5 main gemstones?
- amethyst (purple) – Rare and precious in the Old World until large deposits were found in Brazil.
- diamond (white)
- emerald (green)
- ruby (red)
- sapphire (blue)