The finest specimens have a pure tinge, uniformly diffused throughout the whole mass. The most highly prized come from Brazil, but they are found also in Germany, in the Sierras of Murcia in Spain, and in Auvergne and many other places.

The most remarkable antique amethyst, preserved in France, is the bust of Mecaenas engraved by Dioscorides. But we should also mention the no less wonderful Achilles Citharcedus, due to the skill of Pamphilus.