Nayak BB, Dash T, Mishra BK. Purple Coloured Natural Ruby: X-ray Photoelectron Spectroscopy, X-ray Diffraction, X-ray Tomography and Other Microstructural Characterizations. IJSBAR [Internet]. 2016 Feb. 5 [cited 2024 May 5];25(2):94-114. Available from: https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/5123