| Answer | Crossword Clue |
|---|---|
| ATOM | Minimal amount of gold or platinum |
| hallmark | A mark stamped on articles of gold, silver, or platinum in Britain, certifying their standard of purity |
| hallmarks | A mark stamped on articles of gold, silver, or platinum in Britain, certifying their standard of purity |
| riffled | the lining of transverse bars or slats on the bed of a sluice, arranged so as to catch heavy minerals, as gold or platinum |
| riffle | the lining of transverse bars or slats on the bed of a sluice, arranged so as to catch heavy minerals, as gold or platinum |
| METAL | Gold or platinum |
| PRECIOUSMETAL | Gold or platinum |
| RIAA | Org. certifying albums as gold or platinum |
