The word "emerald" is derived (via Old French: esmeraude and Middle English: emeraude), from Vulgar Latin: esmaralda/esmaraldus, a variant of Latin smaragdus, which was a via Ancient Greek: σμάραγδος (smaragdos; "green gem") from a Semitic language.

Are emeralds classified as Beryls?

Emerald is the green to bluish green variety of beryl, a mineral species that also includes aquamarine as well as beryls in other colors. Gem experts differ on the degree of green that makes one stone an emerald and another stone a less-expensive green beryl.

What category is emerald?

Emeralds naturally fall into the Type 3 gemstone category.