African amethyst was the most used gemstone in the amethyst category, I'm talking about the 20th century, especially the late 20th century. Later, this Semi-precious gem started tarnishing due to various reasons. African amethyst miners in the African mining regions faced a dwindling supply of this high quality amethyst. There was now less amethyst affecting the world market, all markets where African material was used to meet the demand for amethyst. Although supply decreased, demand was still high because African amethyst had been used in gold and silver jewelry for so many years. This had a direct impact on the prices of this material. Prices have gone up and up since then as demand waned and jewelry companies and gem dealers began using Brazilian amethyst more often, again due to the lower mining price and huge supply. .