In Carlin, Nevada is in Eureka County. There is a famous turquoise mine there called Number 8. It was found in 1925 and then mined finally 4 years later in 1929. The mine is no longer mined for turquoise, but it is mined for gold at present.
Number 8 is the mine that produced a selection of the biggest nuggets ever found in history. The turquoise from this mine is mostly composed of a matrix of spider web type with varieties of black to gold brown and color grades of extremely dark blue to light blue. Occasionally it will be a variety of green tints as well. The color make-up and pattern matrixes from the Number 8 are unique and easy to spot. In 2020 the Number 8 darker shades of turquoise are both rare and valued by turquoise collector