Purple gemstones, including amethyst ... Gemstones are more than just beautiful accessories-they are natural wonders shaped by time and pressure. Their rarity and formation process give them ...

What gives gemstones colors, or rather ... Amethyst, a type of quartz, owes its captivating purple hue to the presence of iron impurities. When iron (Fe) atoms replace some of the silicon ...

Violet by name, violet by nature, the genus Viola is a perfect example of purple in the natural world. Purple is common in plants, largely thanks to a group of chemicals called anthocyanins. When it ...