Intriguing minerals: corundum in the world of rubies and sapphires with special attention to Macedonian rubies
Intriguing minerals: corundum in the world of rubies and sapphires with special attention to Macedonian rubies
![Sapphire from India (left, 21.85 carat, ct) and from Sri Lanka (right,... | Download Scientific Diagram Sapphire from India (left, 21.85 carat, ct) and from Sri Lanka (right,... | Download Scientific Diagram](https://www.researchgate.net/publication/351137700/figure/fig3/AS:1017799900147714@1619673814572/Corundums-in-the-full-range-of-colours-080-141ct-Collection-Christoph-Steidl_Q320.jpg)
Sapphire from India (left, 21.85 carat, ct) and from Sri Lanka (right,... | Download Scientific Diagram
![Sapphire from India (left, 21.85 carat, ct) and from Sri Lanka (right,... | Download Scientific Diagram Sapphire from India (left, 21.85 carat, ct) and from Sri Lanka (right,... | Download Scientific Diagram](https://www.researchgate.net/publication/351137700/figure/fig6/AS:1017799900143623@1619673814942/Corundum-crystals-from-North-Macedonia-a-showing-orange-and-red-fluorescence-in-the_Q320.jpg)