GIA DIAMOND GRADING QUIZ 1 SPRING 2023 SCORED 98%

GIA DIAMOND GRADING QUIZ 1 SPRING 2023 SCORED 98% The more an inclusion differs in color from its host diamond the more obvious it is A feather that reaches a bezel surface as well as the surface of the pavilion main directly under the bezel should be plotted on both the crown and pavilion diagrams In a stone with these clarity characteristics, which would probably be the grade-setting characterisitc? feather Which would disqualify a stone from being IF Pinpoint Diamonds with minute inclusions at 10x are VVS1 or VVS2 A reflector is the result of the inclusions position A round brilliant VVS diamond could have a small pinpoint under a lower girdle facet VS1 and VS2 stones would be expected to have minute inclusons One factor used to determine the clarity grade of a diamond is an inclusions location A stone with only a few extra facets on its pavilion that can't be seen face up should be graded IF Inclusions are most visible when located directly under the table Squares or rectangles, trigons, and parallel grooves are types of growth marks The crystal planes most suitable for cleaving a diamond are the octahedral planes Which is the softest crystal direction in a diamond Dodecahedral Crystal shape is important in evaluating rough because it affects the amount of weight retained after cutting The diamond term glassy refers to a well-formed octahedral crystal Naturally occurring, inorganic substance with a characteristic chemical composition and usually a characteristic crystal structure is known as a mineral The habit of gem quality diamond is the octahedron Another name for the cubical crystal system is isometric