Gem-A - Who can tell us what this is? We've given you some hints below... 📌 Carbonate of chromium and magnesium 📌 Pink, lilac and vibrant purple colour variations 📌 Occurs with
![Chromium transition metal Chemistry chromium(III) Cr3+ complex ions chromate(VI) CrO42- dichromate(VI)Cr2O72- redox chemical reactions principal +3 +6 oxidation states ligand substitution GCE AS A2 IB A level inorganic chemistry revision notes Chromium transition metal Chemistry chromium(III) Cr3+ complex ions chromate(VI) CrO42- dichromate(VI)Cr2O72- redox chemical reactions principal +3 +6 oxidation states ligand substitution GCE AS A2 IB A level inorganic chemistry revision notes](https://www.docbrown.info/page07/SSquestions/0complexCrH2O6b.gif)
Chromium transition metal Chemistry chromium(III) Cr3+ complex ions chromate(VI) CrO42- dichromate(VI)Cr2O72- redox chemical reactions principal +3 +6 oxidation states ligand substitution GCE AS A2 IB A level inorganic chemistry revision notes
![Chromium transition metal Chemistry chromium(III) Cr3+ complex ions chromate(VI) CrO42- dichromate(VI)Cr2O72- redox chemical reactions principal +3 +6 oxidation states ligand substitution GCE AS A2 IB A level inorganic chemistry revision notes Chromium transition metal Chemistry chromium(III) Cr3+ complex ions chromate(VI) CrO42- dichromate(VI)Cr2O72- redox chemical reactions principal +3 +6 oxidation states ligand substitution GCE AS A2 IB A level inorganic chemistry revision notes](https://www.docbrown.info/page04/4_75trans/trans04-04cr.gif)
Chromium transition metal Chemistry chromium(III) Cr3+ complex ions chromate(VI) CrO42- dichromate(VI)Cr2O72- redox chemical reactions principal +3 +6 oxidation states ligand substitution GCE AS A2 IB A level inorganic chemistry revision notes
![Materials | Free Full-Text | Preparation and Basic Properties of Praseodymium-Neodymium-Chromium Containing Imitation Gemstone Glass Materials | Free Full-Text | Preparation and Basic Properties of Praseodymium-Neodymium-Chromium Containing Imitation Gemstone Glass](https://www.mdpi.com/materials/materials-15-07341/article_deploy/html/images/materials-15-07341-g001.png)