Clarity and Value Flashcards
Plot
A color-keyed diagram of a gemstone’s significant clarity characteristics.
Clarity
a gemstone’s relative freedom from inclusions and blemishes
Graining
Graining often looks like faint lines or streaks. Sometimes the lines are parallel, and sometimes they intersect.
Break
A clarity characteristic that can develop during or after formation
Feathers
A collective term for diamond cleavages and fractures.
Cleavage
a break parallel to the weakest direction in the gem’s structure
Fracture
a break in any other direction
Manufacturers
An individual or company that cuts and polishes diamonds and colored stones.
Bruting
Forming the basic face-up outline of a round or rounded-shape diamond to prepare it for faceting.
Laser Drilling
Treatment that involves using a concentrated beam of laser light to reach a diamond’s dark inclusions and to disguise or eliminate them.
FRACTURE FILLING
Treatment that involves injecting a molten glass substance into a diamond’s surface-reaching feathers or laser drill-holes.
APPARENT CLARITY
A term used to describe the effects of treatments on the visual appeal of a gemstone.
