| with the naked eye | 4 | manner |
| at the reaction zone | 3 | location |
| by gemologist | 3 | other |
| color → be → detected | 37 |
| color → be → detectable | 12 |
| negative | neutral | positive |
| 0.101 | 0.784 | 0.115 |
| Raw frequency | 49 |
| Normalized frequency | 0.382 |
| Modifier score | 0.067 |
| Perplexity | 201.878 |