DCA DCA Diamond Cutting & Polish Techniques 3

Question 1

What is the ideal table percentage range for a round brilliant cut diamond according to most grading standards?

Accepted Answer

53–58%

Answer

40–45%

Answer

65–70%

Answer

75–80%

Question 2

What is a 'princess cut' diamond?

Accepted Answer

A square or rectangular brilliant cut with pointed corners

Answer

A square step cut with cropped corners

Answer

An oval brilliant cut with high crown

Answer

A pear-shaped mixed cut

Question 3

What does 'depth percentage' measure in a diamond?

Accepted Answer

The depth of the stone divided by its average diameter

Answer

The number of facets below the girdle

Answer

The angle of the pavilion facets

Answer

The distance from table to girdle

Question 4

Which of the following is considered a 'fancy cut' diamond shape?

Accepted Answer

Marquise

Answer

Round brilliant

Answer

Old mine cut

Answer

European cut

Question 5

What is 'brilliance' in diamond optics?

Accepted Answer

The total light reflected from the interior and exterior of a diamond

Answer

The colored light dispersed from a diamond

Answer

The sparkle seen when the diamond moves

Answer

The depth of the stone's color saturation

Question 6

A diamond with a 'thick' girdle is considered problematic because it:

Accepted Answer

Adds unnecessary weight without increasing visible size

Answer

Makes the diamond more prone to chipping

Answer

Causes light leakage through the pavilion

Answer

Reduces the total number of facets