Up for your consideration is this large vintage American turquoise rough specimen! Perfect for cabbing, other lapidary work, or simply displaying as a specimen. 
This nugget appears to be natural untreated American turquoise. Judging from the robin's egg blue color, it is most likely Sleeping Beauty. This is heavy solid turquoise, not chalk turquoise!
This nugget measures approximately 31.. cut end to cut end, by 45mm wide, and 36mm thick. This piece is in overall excellent vintage condition! This specimen weighs 249 carats (49.8 grams) on my digital scale. Please feel free to ask an questions you might have, and be sure to check out my other GREAT items!