Characterization of Red, Pink, Orange, and Purple Gem-Quality Spinel from Four Important Areas
Spinel is a precious stone with a long history. In ancient societies spinel was considered to be an imitation of ruby. With the depletion of ruby mineral resources, gem—grade spinel has attracted more and more attention from consumers. In the last decade, as the popularity of spinel in the global co...
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MDPI AG
2023-12-01
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| Ráidu: | Crystals |
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| Liŋkkat: | https://www.mdpi.com/2073-4352/14/1/50 |
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