Diamond Grading Quiz 1 with Correct
Solutions
Improved technology. - Answer-The shift in emphasis from alluvial to primary diamond mining was due
to
Pipe,alluvial,and marine deposits. - Answer-African diamonds are recovered from
Siberia. - Answer-Russia's significant diamond deposits are in
Should be plotted on both the crown and pavilion diagrams - Answer-A feather that reaches a bezel
surface as well as the surface of the pavilion main directly under the bezel
Feather - Answer-In a stone with these clarity characteristics, which would probably be the grade-
setting characterisitc?
Pinpoint - Answer-Which would disqualify a stone from being IF
VVS1 or VVS2 - Answer-Diamonds with minute inclusions at 10x are
, Minor included crystals and feathers. - Answer-VS1 and VS2 stones might have
Position - Answer-A reflector is the result of the inclusions
Dark Field illumination - Answer-Lighting of a diamond from the side against a black, non-reflective
background.
Depth of Field - Answer-The distance that's clear and sharp above and
below a point you focus on with a
magnifier.
Brightfield illumination - Answer-This makes the inclusions stand out as dark objects against a bright
background.
To create this type of illumination, called
A small pinpoint under a lower girdle facet - Answer-A round brilliant VVS diamond could have
Minute inclusons - Answer-VS1 and VS2 stones would be expected to have
Location - Answer-One factor used to determine the clarity grade of a diamond is an inclusions
Flawless - Answer-A stone with only a few extra facets on its pavilion that can't be seen face up should
be graded
Directly under the table - Answer-Inclusions are most visible when located
Growth marks - Answer-Squares or rectangles, trigons, and parallel grooves are types of
Solutions
Improved technology. - Answer-The shift in emphasis from alluvial to primary diamond mining was due
to
Pipe,alluvial,and marine deposits. - Answer-African diamonds are recovered from
Siberia. - Answer-Russia's significant diamond deposits are in
Should be plotted on both the crown and pavilion diagrams - Answer-A feather that reaches a bezel
surface as well as the surface of the pavilion main directly under the bezel
Feather - Answer-In a stone with these clarity characteristics, which would probably be the grade-
setting characterisitc?
Pinpoint - Answer-Which would disqualify a stone from being IF
VVS1 or VVS2 - Answer-Diamonds with minute inclusions at 10x are
, Minor included crystals and feathers. - Answer-VS1 and VS2 stones might have
Position - Answer-A reflector is the result of the inclusions
Dark Field illumination - Answer-Lighting of a diamond from the side against a black, non-reflective
background.
Depth of Field - Answer-The distance that's clear and sharp above and
below a point you focus on with a
magnifier.
Brightfield illumination - Answer-This makes the inclusions stand out as dark objects against a bright
background.
To create this type of illumination, called
A small pinpoint under a lower girdle facet - Answer-A round brilliant VVS diamond could have
Minute inclusons - Answer-VS1 and VS2 stones would be expected to have
Location - Answer-One factor used to determine the clarity grade of a diamond is an inclusions
Flawless - Answer-A stone with only a few extra facets on its pavilion that can't be seen face up should
be graded
Directly under the table - Answer-Inclusions are most visible when located
Growth marks - Answer-Squares or rectangles, trigons, and parallel grooves are types of
