Pure quartz crystals are completely clear like ice. One of the neatest things is that a lot of what gives crystals their uniqueness and color is actually impurities. If you alter the temperature, you get a certain type of crystal and if you change the mix of minerals you'll get another type. But they're pretty rocks that didn't just appear-it takes specific and intricate circumstances to create a crystal.Īccording to the Smithsonian, all crystals are the result of a stew of different minerals, different temperatures, and different pressures. We've been around them most of our lives and probably own a little collection but a lot of us don't understand them much more than they're pretty rocks. Then mineral-rich underground waters flow through the cavity and, over many years, deposit minerals which grow into crystals. ![]() The Young Naturalist explains that geode are formed when a cavity in rock forms either from shifting sediment, dissolving deposits, or cooling of magma. It’s not one note of beauty like some crystal points or simple geodes. There are just so many different things happening that your eye really moves around the stone. The majority of the crystals are a lovely orangey-lemon shade of citrine with some larger crystals of white quartz. In the top left-hand corner, you can even see what looks like the beginning of a geode within a geode. The striking black shell is a perfect contrast to the quartz, bringing attention to the strata of different layers you can see as the geode grew over time. ![]() This citrine geode has a brilliantly contrasting black shell filled with citrine and quartz crystals.Īt 16.5 inches tall, 12.5 inches wide, and eight inches deep this geode is enough to make any jaw drop.
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