Streak testing a sample of pyrite will yield a greenish black streak. Photo by James St. John. Licensed under CC By 2.0.
Opaque Yellow Pyrite Specimen
Streak testing a sample of pyrite will yield a greenish-black streak. Photo by James St. John. Licensed under CC By 2.0.
Article: Destructive Gemstone Tests: Streak Testing
Credit: James St. John
| Gemstone | Pyrite |
| Natural or man made | Natural |
| Gem State | Specimen |
| Color | Yellow |
| Transparency | Opaque |