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1. What describes the distance that's clear and sharp above and below a focus
point? - ANSWER depth of field
2. What type of loupe has been corrected for color distortion and linear
distortion? - ANSWER Triplet
3. What do clarity characteristics help determine? - ANSWER Identity
4. What are diamond's inclusions and blemishes called? - ANSWER Clarity
characteristics
5. What is the abbreviation for a tiny crystal that looks like a very small dot at
10x? - ANSWER Pp
6. What does chromatic aberration cause? - ANSWER Rainbow effect at
edges of lens
, 7. What magnification is used to assess clarity characteristics' visibility? -
ANSWER 10x
8. What clarity characteristic is caused by treatment? - ANSWER Laser
drill-hole
9. What is an advantage of a loupe versus a microscope in clarity grading? -
ANSWER Portability
10.Where does light enter a stone in darkfield illumination? - ANSWER Side
11.What type of characteristic is in focus while the surface is out of focus? -
ANSWER Inclusion
12.What are the two types of inclusions? - ANSWER Totally enclosed and
surface-reaching
13.Which factor of clarity characteristics can influence a diamond's clarity
grade? - ANSWER Size
14.What clarity grade are diamonds with minor inclusions difficult to
somewhat easy to see under 10x? - ANSWER VS1 or VS2
15.What describes the nature of a clarity characteristic? - ANSWER type