| Luster | Characteristics |
|---|---|
| Metallic | Strong reflections produced by opaque substances |
| Vitreous | Bright, as in glass |
| Resinous | Characteristic of resins, such as amber |
| Greasy | The appearance of being coated with an oily substance |
| Pearly | The whitish iridescence of such materials as pearl |
| Silky | The sheen of fibrous materials such as silk |
| Adamantine | The brilliant luster of diamond and similar minerals |