T263 Gem Minerals, Localities and Geological Significance (Posters)

Wednesday, 25 September 2024
8:00 AM - 5:30 PM
Hall D

GEMOLOGICAL CHARACTERIZATION OF EMERALDS FROM NORTH CAROLINA, UNITED STATES

Paper number: T263-2
Program: Technical Sessions
Time: 8:00 AM – 5:30 PM

Authors

Abstract

Emerald deposits in North America are few and far between. Of the known mining deposits, the emeralds discovered in the piedmont region of North Carolina have both a historical significance and a gemological distinctiveness1. Known as “Green Bolts” by the local population prior their world-renowned fame, these emeralds have been classified by their colorless core and green rim body color and a chemistry that differentiates them from other geographical origins. Here, we will discuss the chemistry, and other characteristics, that can aid in the identification of North Carolina emeralds, focusing on the mines in Alexander County, as well as Mitchell County.

References

  1. Kunz, G. F. (1907). History of the gems found in North Carolina. Raleigh: Uzzell. Pp 37-48

Geological Society of America Abstracts with Programs. Vol. 56, No. 5

doi: 10.1130/abs/2024AM-402100

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