The Real Deal: How to Tell if Your Gemstones Are Genuine – Part 4

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As anyone who appreciates fine beads or jewelry can tell you, coral isn't just a fancy kind of shell. In fact, it's not a shell at all! Coral is, by Google's definition, "a hard stony substance secreted by certain marine coelenterates [aquatic invertebrates] as an external skeleton, typically forming large reefs in warm seas." This…