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Diamonds and Diamond Grading 9
The Evolution of Diamond Cutting
14
Geology
Post-Graduate
10/29/2018

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Cards

Term
Blocking
Definition
placing the first 17 or 18 facets on a diamond
Term
Brillianteering
Definition
placement and polishing of the star and upper and lower girdle facets
Term
Bruting
Definition
forming the basic face-up outline of a diamond to prepare it for faceting
Term
Cleaving
Definition
dividing a diamond into two or more pieces along a cleavage plane
Term
Dop
Definition
a holder that secures a diamond during sawing, bruting, or polishing
Term
Kerf
Definition
a notch scratched into diamond rough to prepare it for cleaving
Term
Old European Cut
Definition
an early brilliant cut with a circular girdle
Term
Old-mine Cut
Definition
an early cushion-shaped brilliant with a high crown, deep pavilion, and 58 facets including a large culet
Term
Planner
Definition
the person who decides where to mark diamond rough for fashioning into the most profitable polished gem
Term
Polishing
Definition
placing and finishing facets on a rough diamond; also called faceting
Term
Sawing
Definition
dividing diamond rough into sections, either mechanically or by laser
Term
Scaife
Definition
a rapidly spinning horizontal disc coated with diamond powder, used to polish diamond rough
Term
Single Cut
Definition
a simple diamond cut, with a table, eight crown facets, eight pavilion facets, and sometimes a culet
Term
Tang
Definition
a device that holds the dop and allows polishers to adjust and maintain a diamond's angle during polishing
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