Artificial pink corundum is produced by melting aluminum oxide together with chromium oxides in electric arc furnaces. Compared to white corundum, pink corundum alloyed with chromium has a significantly higher hardness. Corundum alloyed with chromium is characterized by a longitudinal grain shape with sharp edges and a stable specific gravity. Thanks to the perfect washing in water, the grains are clean, they have a bright pink color.
Packaging:
In 25 kg bags or 1t / big bag
| FEPA | Average gain size | FEPA | Average gain size |
| F-8 | 2800-2000 | F-46 | 425-300 |
| F-10 | 2360-1700 | F-54 | 355-250 |
| F-12 | 2000-1400 | F-60 | 300-212 |
| F-14 | 1700-1180 | F-70 | 250-180 |
| F-16 | 1400-1000 | F-80 | 212-150 |
| F-20 | 1180-850 | F-90 | 180-125 |
| F-22 | 1000-710 | F-100 | 150-106 |
| F-24 | 850-600 | F-120 | 125-90 |
| F-30 | 710-500 | F-150 | 106-63 |
| F-36 | 600-425 | F-180 | 90-63 |
| F-40 | 500-355 | F-220 | 75-53 |
* Other grain sizes can be produced if required
| FEPA | Ds3 max. | Ds50 | Ds94 min. |
| F-240 | 70 | 44,5+/-2,0 | 28 |
| F-280 | 59 | 36,5+/-1,5 | 22 |
| F-320 | 49 | 29,2+/-1,5 | 16,5 |
| F-360 | 40 | 22,8+/-1,5 | 12 |
| F-400 | 32 | 17,3+/-1,0 | 8 |
| F-500 | 25 | 12,8+/-1,0 | 5 |
| F-600 | 19 | 9,3+/-1,0 | 3 |
| F-800 | 14 | 6,5+/-1,0 | 2 |
| F-1000 | 10 | 4,5+/-0,8 | 1 |
| F-1200 | 7 | 3,0+/-0,5 | 1 (80%) |
| F-1500 | 5 | 2,0+/-0,4 | 0,8 (80%) |
| F-2000 | 3,5 | 2,0+/-0,4 | 0,5 (80%) |
| Hardness | 9,2 Mohs |
| Melting point | 2050 ˚C |
| Bulk density* | 1,5 - 2,1 kg / dm3 |
| Grain shape | Angular |
* Depending on grain size.
| Al2O3 | 98-99% |
| Cr2O3 | 0,3-1,0% |
| Na2O | 0,30% |
| Fe2O3 | 0,05% |
| CaO | 0,05% |
