A natural chunk necklace of cobalt blue lapis lazuli, with flecks of pyrite (aka fool's gold). The nugget has rounded corners & is slightly wider at the bottom than at the top.
This piece of lapis lazuli comes from Chile, where it is the national stone. The semi precious gemstone is under an inch (2.1 cm) long & is wrapped in sterling silver, & strung on an 16-inch (40 cm) sterling silver chain with a small spring ring clasp. The back of the pendant has some lighter patches.