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Crystals |
| edHelper's suggested reading level: | grades 7 to 8 | |
| Flesch-Kincaid grade level: | 6.86 |
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Crystals
By Sharon Fabian |
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1 Salt crystals are square. Snowflakes have six sides. A diamond has many sides. Minerals like these that have flat smooth sides are all called crystals. Crystals are made of molecules that are all the same shape, and are arranged in a neat pattern. This pattern gives crystals their beautiful geometric shapes. Some crystals can be cut and polished into sparkling jewelry. These crystals are called gemstones. Diamonds, emeralds, amethyst, and rubies are crystals. Some gemstones have colorful names that match the gem. There are green phantom quartz, rainbow obsidian, and Oregon jelly opal.