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This gemstone is well-known for its "play-of-color," or ability to shift color. Opals often have a kaleidoscope of colors on their surface. This birthstone symbolizes purity, hope and truth.
Pink Chalcedony A pink chalcedony shows off its beauty. Chalcedonies include many types of cryptocrystalline quartz gems and feature a number of different colors. Geologists can tell a chalcedony ...
Each month has at least one representative gemstone. ... Get to know these dazzling gems and their color. Olivia Munson, USA ... Citrine is a type quartz, with its colors ranging from yellow to ...
Amethyst, for example – which you might not realize counts as quartz, but definitely does – owes its purple hue to the presence of iron, irradiated by gamma rays from the rock surrounding the gem.