GIA-DDG 16 Flashcards
The slightly curving center of the long side of a pear, marquise, heart, or oval is called what?
Belly
A dark area across the center of an elongated brilliant cut
Bow-Tie
A cutting style in which triangular and kite-shaped facets radiate from a gem’s center toward its girdle
Brilliant Cut
The arrangement of a gem’s facets
Cutting Style
Any gemstone shape other than round
Fancy Cut
A faceting style that replaces the large bezel facets at the points of marquises, pears, and hearts with a star and upper girdle facets
French Tips
A numerical expression of the relationship between the length and width of a fancy cut where the vallue for width is one
Length-to-Width ratio
A cutting style that combines step-cut and brilliant-cut facets
Mixed Cut
Outward curve of the pavilion facets of a step-cut diamond
Pavilion Bulge
A diamond’s overall attractiveness in relation to others of the same shape and cutting style
Shape Appeal
A cutting style with long, narrow, four-sided facets in rows parallel to the girdle on both the crown and pavilion
Step cut
On an emerald-cut diamond, very narrow corners should be noted under
Proportions, as a shape-appeal factor
Where on a fancy-cut diamond might multiple facet reflections make it most difficult to detect clarity characteristics?
Point
Calculate the length-to-width ratio of the following pear shape:
Length: 7.51 mm
Width: 5.19
Divide Length by Width
Which of the following appears only on fancy cuts?
Keel line