The April birthstone is the diamond, the hardest known gem
Happy birthday, April babies! The April birthstone, the diamond, is the hardest of the known gems. And it's a popular choice for engagement rings. The post The April birthstone is the diamond, the hardest known gem first appeared on EarthSky.
earthsky.org/earth/april-birthstone-diamond/
earthsky.org/earth/april-birthstone-diamond/
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