Hiddenite
6.5–7Hardness (Mohs)
LiAlSi₂O₆:CrChemistry
4Known origins & mines
Emerald-green chromium spodumene from a single North Carolina county — Hiddenite, where it was found in 1879. The Emerald Hollow Mine there remains the only significant source open to public prospecting.
Known origins & mines
Emerald Hollow Mine · United States
Hiddenite NC is the world's only hiddenite locality — visitors sluice creek gravel for emerald-green spodumene, hiddenite and Hiddenite-area…