![Intriguing minerals: corundum in the world of rubies and sapphires with special attention to Macedonian rubies | SpringerLink Intriguing minerals: corundum in the world of rubies and sapphires with special attention to Macedonian rubies | SpringerLink](https://media.springernature.com/lw685/springer-static/image/art%3A10.1007%2Fs40828-021-00143-0/MediaObjects/40828_2021_143_Fig11_HTML.jpg)
Intriguing minerals: corundum in the world of rubies and sapphires with special attention to Macedonian rubies | SpringerLink
![Revelations: The Nativity Scene of Christoph Steidl Porenta, goldsmith and silversmith - National Gallery of Slovenia Revelations: The Nativity Scene of Christoph Steidl Porenta, goldsmith and silversmith - National Gallery of Slovenia](https://www.ng-slo.si/en/imagelib/magnify/default/RAZSTAVE/POLETIH/2022/Odstiranja/Porenta-jaslice/jaslice2.jpg)
Revelations: The Nativity Scene of Christoph Steidl Porenta, goldsmith and silversmith - National Gallery of Slovenia
![Intriguing minerals: corundum in the world of rubies and sapphires with special attention to Macedonian rubies | SpringerLink Intriguing minerals: corundum in the world of rubies and sapphires with special attention to Macedonian rubies | SpringerLink](https://media.springernature.com/lw685/springer-static/image/art%3A10.1007%2Fs40828-021-00143-0/MediaObjects/40828_2021_143_Fig22_HTML.jpg)
Intriguing minerals: corundum in the world of rubies and sapphires with special attention to Macedonian rubies | SpringerLink
![Revelations: The Nativity Scene of Christoph Steidl Porenta, goldsmith and silversmith - National Gallery of Slovenia Revelations: The Nativity Scene of Christoph Steidl Porenta, goldsmith and silversmith - National Gallery of Slovenia](https://www.ng-slo.si/en/imagelib/magnify/default/RAZSTAVE/POLETIH/2022/Odstiranja/Porenta-jaslice/jaslice1.jpg)
Revelations: The Nativity Scene of Christoph Steidl Porenta, goldsmith and silversmith - National Gallery of Slovenia
![Intriguing minerals: corundum in the world of rubies and sapphires with special attention to Macedonian rubies | SpringerLink Intriguing minerals: corundum in the world of rubies and sapphires with special attention to Macedonian rubies | SpringerLink](https://media.springernature.com/lw685/springer-static/image/art%3A10.1007%2Fs40828-021-00143-0/MediaObjects/40828_2021_143_Fig21_HTML.jpg)
Intriguing minerals: corundum in the world of rubies and sapphires with special attention to Macedonian rubies | SpringerLink
![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/fig2/AS:1017799900143617@1619673814459/Sapphire-from-India-left-2185carat-ct-and-from-Sri-Lanka-right-1190ct_Q640.jpg)
Sapphire from India (left, 21.85 carat, ct) and from Sri Lanka (right,... | Download Scientific Diagram
![Christoph Steidl Porenta, Goldsmith, Silversmith, Artist | Silversmithing, Artist, Contemporary jewellery Christoph Steidl Porenta, Goldsmith, Silversmith, Artist | Silversmithing, Artist, Contemporary jewellery](https://i.pinimg.com/originals/7e/c5/e7/7ec5e7904dbe4b7f02faee8049340328.jpg)