Occupation: Gem and Diamond Workers
Task: Examine gem surfaces and internal structures, using polariscopes, refractometers, microscopes, and other optical instruments, to differentiate between stones, to identify rare specimens, or to detect flaws, defects, or peculiarities affecting gem values.

Scale: Frequency of Task (Categories 1-7)
Category: 1
Value: 0.97 (N=57)
Source: Incumbent, 06/2008

Scale: Frequency of Task (Categories 1-7)
Category: 2
Value: 38.46 (N=57)
Source: Incumbent, 06/2008

Scale: Frequency of Task (Categories 1-7)
Category: 3
Value: 7.28 (N=57)
Source: Incumbent, 06/2008

Scale: Frequency of Task (Categories 1-7)
Category: 4
Value: 18.01 (N=57)
Source: Incumbent, 06/2008

Scale: Frequency of Task (Categories 1-7)
Category: 5
Value: 15.95 (N=57)
Source: Incumbent, 06/2008

Scale: Frequency of Task (Categories 1-7)
Category: 6
Value: 13.7 (N=57)
Source: Incumbent, 06/2008

Scale: Frequency of Task (Categories 1-7)
Category: 7
Value: 5.63 (N=57)
Source: Incumbent, 06/2008

Scale: Importance
Value: 4.31 (N=56)
Source: Incumbent, 06/2008

Scale: Relevance of Task
Value: 87.67 (N=73)
Source: Incumbent, 06/2008