Rist Mine (North America Emerald Mine; American Gems Mine; LKA International Emerald Mine), Hiddenite, Alexander Co., North Carolina, USA
Transparent emerald-green crystals of the precious spodumene - hiddenite
- were first discovered at this deposit.
In 1882, 74 emerald
crystals of good quality were extracted from one vug, the largest of which was 21.2 cm in length and 225 g in weight (Sinkankas, ibid).
Ref: E.Ya. Kievlenko, Geology of gems, 2003, p. 78