Beautiful Lightning Ridge Black Opal Earrings in Sterling Silver The blue-turquoise color of these

The blue-turquoise color of these stones is caused by rich copper content

We had people asking not to polish because they want them to look more like the buildings at the University

We have 2 blocks one from the pink quarry and one from the gray quarry at Virginia Tech and are honored to be able to provide our jewelry to all whom love VA Tech

which are among the earth's oldest geological formations

The color composition is usually a shade of green

Beautiful Lightning Ridge Black Opal Earrings in Sterling Silver The blue-turquoise color of theseBeautiful Lightning Ridge Black Opal Earrings in Sterling Silver Overall size: 5 8 x 1 4 inch or 16 x 6 mm Set in sterling silver findings. One of a kind. About Black Australian Opal Origin: True black opals are found almost exclusively in Lightning Ridge, New South Wales, Australia, which is the source of virtually all investment grade material. Appearance: The term "black opal" refers to the gem's dark body tone (ranging from dark grey to jet black)