A vintage Native American style sterling silver ring featuring a Number 8 Eureka Nevada turquoise stone. The sterling silver ring, crafted in the style of Native American jewelry, showcases the traditional techniques and craftsmanship of Native American silversmiths. The Number 8 stone comes from a very specific mine in Nevada, USA. The color of Number 8 varies from blue with shades of green to beautiful dark blue. It is known for its black, golden-red, and brown matrix. Found in Eureka County, Nevada, the Number 8 turquoise is no longer being produced. This makes it one of the most valuable and rare stones that can be collected and worn. Hallmarked. Circa the mid 20th century. Weight: 3.75 grams. Vintage Fashion Accessories And Jewelry Collectibles.