DCA DCA Diamond Cutting & Polish Techniques 1 — Questions and Answers
Question 1: What is the term for the flat top facet of a round brilliant cut diamond?
- Table (Correct answer)
- Culet
- Girdle
- Crown
Correct answer: Table
The table is the large, flat top facet of a diamond that allows light to enter the stone.
Question 2: How many facets does a standard round brilliant cut diamond have?
- 58 (Correct answer)
- 64
- 48
- 72
Correct answer: 58
A standard round brilliant cut has 58 facets, including 33 on the crown and 25 on the pavilion (or 57 if there is no culet facet).
Question 3: What is the 'culet' of a diamond?
- The small facet or point at the bottom of the pavilion (Correct answer)
- The widest part of the diamond
- The upper portion above the girdle
- The angle of the crown facets
Correct answer: The small facet or point at the bottom of the pavilion
The culet is the small facet (or pointed tip) at the very bottom of the diamond's pavilion.
Question 4: Which diamond cut is known for its rectangular shape with cropped corners and step-cut facets?
- Emerald cut (Correct answer)
- Princess cut
- Radiant cut
- Asscher cut
Correct answer: Emerald cut
The emerald cut is a rectangular step-cut style with trimmed corners, originally developed for emeralds and later applied to diamonds.
Question 5: What does 'polish' refer to in diamond grading?
- The smoothness and quality of the diamond's facet surfaces (Correct answer)
- The reflective color inside the diamond
- The symmetry of the diamond's overall shape
- The depth percentage of the stone
Correct answer: The smoothness and quality of the diamond's facet surfaces
Polish in diamond grading refers to the overall smoothness of each facet surface, which affects how well light passes through and reflects off the diamond.
Question 6: What is the 'girdle' of a diamond?
- The narrow band forming the widest part of the diamond (Correct answer)
- The very bottom point of the stone
- The flat top facet of the diamond
- The angle between the table and crown facets
Correct answer: The narrow band forming the widest part of the diamond
The girdle is the narrow rim around the widest perimeter of the diamond, separating the crown from the pavilion.
DCA DCA Diamond Cutting & Polish Techniques 1
What is the term for the flat top facet of a round brilliant cut diamond?