This is a very fine, display-quality topaz crystal (such as they form from here), from the first tungsten deposit discovered in North America. This color and style is actually typical of old material found in Connecticut in the early 1800s, and even prior into the late 1700s. Perhaps something is included within the topaz to give it the earthy look? This is a 5 cm crystal with a contact termination on one end. Ugly by some standards, but historic and loveable to others.