: Spans 532 pages and includes a glossary, index , and recommended literature for further study. Authorship and Significance
She looked up from the page. Across the lab, the black opal sat under the microscope, its dark body flickering with spectral greens and blues. And for just a moment, she could have sworn that the tiny eye inside it blinked. photoatlas of inclusions in gemstones volume 1 pdf