Simple and chic with a little bit of edge, Nan's 4 diamond logo post with diamond center is the perfect compliment to these edgy bone spikes. The coloration is rare, emanating from the fossil absorbing a mineral called vivianite over thousands of years, giving it an earthy, teal blue coloration. Approximately 3 inches long. Each will vary in color and pattern, as no two are alike. Hand made in California. Please allow 3-4 weeks delivery if sold out.