Statements (16)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:diamond_grading_system
|
| gptkbp:appliesTo |
gem-quality diamonds
|
| gptkbp:carat |
weight measurement
|
| gptkbp:clarity |
absence of inclusions and blemishes
|
| gptkbp:color |
degree of colorlessness
|
| gptkbp:cut |
proportions and finish
|
| gptkbp:developedBy |
gptkb:GIA
|
| gptkbp:includes |
gptkb:color
cut clarity carat |
| gptkbp:introducedIn |
1950s
|
| gptkbp:usedFor |
diamond evaluation
|
| gptkbp:bfsParent |
gptkb:GIA_Laboratory
|
| gptkbp:bfsLayer |
8
|
| https://www.w3.org/2000/01/rdf-schema#label |
4Cs of Diamond Quality
|