Chrysoprase, a light green variety of quartz, used as a gem. Its color is due to the presence of a small quantity of nickel oxide. Chrysoprase is translucent and fades when exposed to heat or light. The color may be restored when the stone is placed in a damp atmosphere. Chrysoprase is found in Europe, the United States, and Australia.
Over the years, archaeologists have excavated an abundance of important fossils from the La Brea Tar Pits, also known as Rancho La Brea. How knowledgeable are you about this prehistoric place of many a mammoth's demise?
Identifying the biggest archaeological find in history is sort of like naming the best movie ever made. One person's blockbuster could be another person's bust. So which find swept the other contenders into the dust?