Legend
| A = amorphous | Cr = crystalline | 
| C = clear | E = excellent | 
| G = good | P = poor | 
| O = opaque | T = translucent | 
| R = Rockwell | S = Shore | 
| 
 STRUCTURE: 
 | 
 A | |
Legend
| A = amorphous | Cr = crystalline | 
| C = clear | E = excellent | 
| G = good | P = poor | 
| O = opaque | T = translucent | 
| R = Rockwell | S = Shore | 
| 
 STRUCTURE: 
 | 
 A | |