| Component | Sulphur | ± | Chlorine | ± | Chromium | ± | Zinc | ± | Arsenic | ± | Bromine | ± | Cadmium | ± | Tin | ± | Antimony | ± | Mercury | ± | Lead | ± | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Purple Gem | 0 | – | 1,206 | – | 0 | – | 11.500 | – | 0 | – | 0 | – | 0 | – | 98.900 | – | 32.300 | – | 0 | – | 0 | – | |
| Silver Back | 0 | – | 2,625 | – | 0 | – | 13.300 | – | 0 | – | 0 | – | 0 | – | 19.400 | – | 29.200 | – | 0 | – | 0.100 | – |
Unless otherwise indicated, the above results are in parts per million (PPM) of a given chemical.
