Emerald

gemstones · green · minerals · jewelry

Green from tiny traces. Emeralds get their beautiful green color from super small amounts of a metal called chromium (or sometimes vanadium) mixed into the beryl mineral. Without these trace elements, beryl would be colorless.

Pretty but fragile. While emeralds are hard (scoring 7.5 to 8 on the hardness scale), they're actually quite brittle and break easily because they usually have lots of tiny cracks inside called inclusions. This makes them trickier to use in jewelry than you might think.

Underground companions. Emeralds form underground alongside other minerals like quartz, fluorite, and muscovite. Geologists look for these mineral friends when they're hunting for emerald deposits.

Silicate superstars. Emeralds are cyclosilicates, which means their atoms are arranged in rings. This special atomic structure is what gives them their crystal shape and some of their special properties.