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PAVILION FACET [19 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2017-05-11

English

Subject field(s)
  • Gemmology
  • Diamond Industry
DEF

An optical effect caused by the reflection of the girdle through the table facet in a diamond having a shallow pavilion.

CONT

... it is essential to maintain the diamond’s symmetry and to ensure that the diamond has optimum brilliance, for example: pavilion angles that are too flat can cause a fish eye: fish eyes are only desired on coloured diamonds: create geometric colour induction.

CONT

Sometimes the face-up view displays a white circle resembling a skinny donut ... In the trade, this is called a fisheye.

PHR

fisheye diamond

Key term(s)
  • fisheye effect

French

Domaine(s)
  • Gemmologie
  • Industrie diamantaire
DEF

Effet d'optique causé par la réflexion du rondiste à travers la table d'un diamant dont la culasse est peu profonde.

CONT

Parfois, lorsqu'un diamant est observé du dessus, on perçoit un cercle lumineux dont la forme rappelle celle d'un beigne [...] On désigne ce cercle lumineux par l'expression «œil de poisson».

PHR

diamant en œil de poisson

Spanish

Save record 1

Record 2 2017-04-13

English

Subject field(s)
  • Gemmology
  • Diamond Industry
DEF

A main facet on the crown and pavilion that is positioned at the widest dimension of the diamond.

CONT

There can be two or four belly facets.

CONT

List the typical facets of a heart shape ...: a) girdle; b) table; 2 head facets; 2 shoulder facets; 2 belly facets; 2 wing facets; 8 stars; 16 halves ...

OBS

Oval, pear, heart and marquise cuts.

French

Domaine(s)
  • Gemmologie
  • Industrie diamantaire
DEF

Facette principale sur la couronne et la culasse dans la partie la plus large du diamant.

CONT

Les facettes d'excédent peuvent être au nombre de deux ou de quatre.

OBS

Tailles ovale, poire, cœur et marquise.

Spanish

Save record 2

Record 3 2017-04-12

English

Subject field(s)
  • Gemmology
  • Diamond Industry
DEF

A crown and pavilion main facet adjacent to the head facet on pear and heart fancy shapes.

CONT

List the typical facets of a heart shape (see Figure F 18): a) girdle; b) table; 2 head facets; 2 shoulder facets; 2 belly facets; 2 wing facets; 8 stars; 16 halves ...

French

Domaine(s)
  • Gemmologie
  • Industrie diamantaire
DEF

Facette principale de couronne et de culasse adjacente à la facette de tête de couronne d'un diamant de taille fantaisie, poire ou cœur.

Spanish

Save record 3

Record 4 2016-03-16

English

Subject field(s)
  • Gemmology
  • Diamond Industry
DEF

A flat polished surface on a diamond.

OBS

On the round brilliant cut there are 58 facets which are called : table, star facet, bezel facet, upper girdle facet, pavilion facet, lower girdle facet, and culet.

French

Domaine(s)
  • Gemmologie
  • Industrie diamantaire
DEF

Surface plane polie d'un diamant.

OBS

La désignation de «facette» s'applique plutôt aux facettes des tailles brillant et des tailles en rose; les facettes des tailles à degrés sont nommées «degrés».

PHR

Faire facette, placer une facette.

Spanish

Campo(s) temático(s)
  • Estudio de las gemas
  • Industria del diamante
DEF

Cada una de las caras talladas en [un diamante].

Save record 4

Record 5 2007-01-19

English

Subject field(s)
  • Gemmology
  • Diamond Industry
DEF

... the first stage of the diamond faceting operation in which the table facet and the first eight crown and eight pavilion facets are cut by the blocker or cross cutter.

CONT

Crossworkers: establish the mains, crown and pavilion facets to specific angles and indices in two steps: 1. blocking the diamond by: establishing the initial 17 main facets, including the: - table; - 8 pavilion mains, to specific angles and indices: 4 corners; 4 pavilions; - 8 crown mains, to specific angles and indices: 4 corners; 4 bezels. 2. lapping the diamond ...

CONT

16/8/8R switch. Selection of the cycle: 16 for halves, 8 for the corners and pavilions or bezels, 8R for blocking in eight cut.

French

Domaine(s)
  • Gemmologie
  • Industrie diamantaire
DEF

Taille des 18 premières facettes de la taille brillant.

CONT

Commutateur 16/8/8R. Choix du cycle : .16 pour les haléfis, .8 pour les angles et les bezels, .8R pour le blocage en 8/8.

OBS

La mise en croix consiste à tailler la table, les quatre coins de la couronne et de la culasse et la colette. La mise en huit comprend les quatre bezels de la couronne et les facettes correspondantes sur la culasse.

Spanish

Save record 5

Record 6 2006-01-25

English

Subject field(s)
  • Gemmology
  • Diamond Industry
CONT

Describe shape : a) the geometric form of a diamond; b) the final shape is dictated by the form of the rough diamond and the presence and position of any inclusions... c) the most common shape is a round brilliant : a diamond polished in a round shape has at least :-33 facets on the crown, including the table;-24 facets on the pavilion with an optional facet, the culet; d) all other shapes(i. e., excluding round brilliant) are referred to as fancy...

CONT

Most people gravitate toward the round brilliant cut in diamonds, for that is the cut which makes the most of the light, the most effective and efficient with light return.

French

Domaine(s)
  • Gemmologie
  • Industrie diamantaire
CONT

La forme rond brillant avec 58 facettes est la plus chère.

Spanish

Save record 6

Record 7 2004-10-05

English

Subject field(s)
  • Gemmology
  • Diamond Industry
DEF

A facet on the pavilion of a diamond.

CONT

Pavilion facets: All facets of any cut stone that are below the girdle, as contrasted with the crown facets that are above the girdle.

French

Domaine(s)
  • Gemmologie
  • Industrie diamantaire
DEF

Facette située au-dessous du rondiste d'un diamant taillé.

CONT

L'ouvrier peut alors donner la première facette de couronne en suivant le même processus que pour les facettes de culasse.

Spanish

Save record 7

Record 8 2004-07-15

English

Subject field(s)
  • Industrial Tools and Equipment
  • Diamond Industry
CONT

Set the diamond in the dop, claws and/or pot :... c) for the crown : using the slit pot method :-select the correct slit pot size : should be approximately 15-20% smaller than the diamond's diameter;-fit the diamond into the slit pot;-lower the claw onto the table facet : ensure the ribs of the pavilion facets fall into the slits of the pot;-turn the dop axle : present the facet for polishing : turn the index adjuster, as required...

French

Domaine(s)
  • Outillage industriel
  • Industrie diamantaire

Spanish

Save record 8

Record 9 2004-07-15

English

Subject field(s)
  • Gemmology
  • Diamond Industry
CONT

Describe the traditional polishing sequence : a) crosswork the diamond :-follow company policies and cut specifications for the angles and indices;-block the diamond :...-lap the diamond : re-mark the girdle for the pavilion; smooth : 4 corners; 4 pavilion facets; re-mark the girdle for the crown; smooth : 4 corners; 4 bezels; table; if a facetted culet is desired, create the facet after the second corner is smoothed; ensure the crown and the pavilion facets are in alignment; b) brillianteer the diamond :...

French

Domaine(s)
  • Gemmologie
  • Industrie diamantaire

Spanish

Save record 9

Record 10 2004-07-13

English

Subject field(s)
  • Gemmology
  • Diamond Industry
CONT

List the typical facets of a pear shape... c) for a traditional pavilion : 2 belly facets; 1 head facet; 2 shoulder facets; 2 wing facets; 16 halves; culet...

French

Domaine(s)
  • Gemmologie
  • Industrie diamantaire

Spanish

Save record 10

Record 11 2004-07-12

English

Subject field(s)
  • Gemmology
  • Diamond Industry
CONT

Describe off-set mains : a) created on pavilions of oval, marquise, pear and radiant shapes; b) pavilion mains align with the crown main facet ribs instead of the crown main facets :pavilion mains are indexed halfway between the crown mains(see Figure F 12), e. g., if the crown mains are indexed at 30°, the pavilion mains would be indexed at 15° and 45°.

Key term(s)
  • offset main

French

Domaine(s)
  • Gemmologie
  • Industrie diamantaire

Spanish

Save record 11

Record 12 2004-07-08

English

Subject field(s)
  • Gemmology
  • Diamond Industry
CONT

Half moon facet : A pavilion girdle break; is triangular shaped on princess diamonds and crescent shaped on radiant diamonds.

French

Domaine(s)
  • Gemmologie
  • Industrie diamantaire

Spanish

Save record 12

Record 13 2004-07-08

English

Subject field(s)
  • Gemmology
  • Diamond Industry
DEF

A facet configuration created on the pavilion of oval, marquise, pear and radiant fancy shapes where the pavilion mains coincide with the crown main facets’ ribs instead of with the crown main facets.

OBS

Figure F 12.

Key term(s)
  • offset
  • offset alignment
  • offset crown/pavilion alignment

French

Domaine(s)
  • Gemmologie
  • Industrie diamantaire
DEF

Se dit lorsque les facettes principales de culasse d'un diamant de taille ovale, marquise, poire ou radiant ne coïncident pas exactement avec les facettes principales de couronne.

Key term(s)
  • alignement couronne-culasse décalé
  • alignement couronne-culasse off-set
  • alignement couronne/culasse offset
  • alignement offset
  • alignement couronne-culasse offset

Spanish

Save record 13

Record 14 2004-07-05

English

Subject field(s)
  • Gemmology
  • Diamond Industry
DEF

A four-sided lozenge-shaped facet on the pavilion of the brilliant cut.

CONT

List the facets of a finished round brilliant shape (see Figure C/B 15): a) on the crown ... b) on the pavilion: - 8 pavilion mains, consisting of: 4 corners; 4 pavilions; - 16 pavilion halves; - culet ...

OBS

A gemmologist may not differentiate between the 4 corners and the 4 bezels on the crown, nor between the 4 corners and the 4 pavilions on the pavilion.

Key term(s)
  • bottom-main facet

French

Domaine(s)
  • Gemmologie
  • Industrie diamantaire
DEF

Facette à quatre côtés en forme de losange sur la culasse de la taille brillant.

CONT

À travers la table s'aperçoit la colette entourée de 8 pavillons.

OBS

8 facettes posées au brillantage sur les coins de culasse à partir du rondiste. [Leur pointe supérieure touche le rondiste, alors que leur pointe inférieure touche la colette.]

Spanish

Save record 14

Record 15 2004-07-05

English

Subject field(s)
  • Gemmology
  • Diamond Industry
DEF

A triangular facet located on the pavilion.

CONT

Pavilion halves: The 16 facets located on the pavilion; created during the brillianteering stage.

CONT

Brillianteers: - create the final fire and brilliance of a polished diamond by polishing the final 40 facets to correct angles and indices, including the: 8 stars; 16 crown halves; 16 pavilion halves; - may re-smooth the table.

French

Domaine(s)
  • Gemmologie
  • Industrie diamantaire
DEF

Facette triangulaire située en bordure de la culasse d'un diamant taille brillant.

OBS

haléfi : Petite facette taillée sur la couronne ou sur la culasse à partir du rondiste.

Spanish

Save record 15

Record 16 2004-05-17

English

Subject field(s)
  • Gemmology
  • Diamond Industry
DEF

A round polished diamond with 32 facets plus a table on the crown and 24 facets on the pavilion, for a total of 57 facets; an optional polished culet would provide for a 58th facet.

OBS

brilliant: Without any additional description of the material, may only be applied to round diamonds with brilliant cut.

OBS

Coloured stones cut in this fashion should be called brilliant-cut followed by the name of the mineral (Ex. brilliant-cut ruby).

French

Domaine(s)
  • Gemmologie
  • Industrie diamantaire
DEF

Diamant de forme ronde et de taille brillant qui comprend 32 facettes de couronne plus une table et 24 facettes de culasse pour un total de 57 facettes; 58 facettes si une colette est taillée.

OBS

brillant : Employé seul, ne peut s'appliquer qu'au diamant rond taille brillant.

OBS

Les pierres de couleur doivent être appelées par le nom du minéral suivi de taille brillant (Ex. rubis taille brillant).

Spanish

Save record 16

Record 17 2004-05-17

English

Subject field(s)
  • Gemmology
  • Diamond Industry
CONT

Fish eye : Effect that occurs when a pavilion facet is polished at too flat an angle;...

French

Domaine(s)
  • Gemmologie
  • Industrie diamantaire
OBS

Vue latérale d'un diamant. [...] Une apparence générale trop massive ou trop aplatie.

Spanish

Save record 17

Record 18 2004-05-17

English

Subject field(s)
  • Industrial Tools and Equipment
  • Diamond Industry
DEF

A gemmological apparatus that is used to examine the proportions of a diamond.

OBS

A device for the projection of the silhouette of a diamond upon a ground-glass screen, on which facet angles, crown height, girdle thickness and pavilion depth may be compared against ideal proportions; introduced in 1967 by the Gemological Institute of America.

French

Domaine(s)
  • Outillage industriel
  • Industrie diamantaire
DEF

Instrument d'optique vendu par la Gemological Institute of America et servant à comparer les proportions d'un diamant taillé en brillant avec celles du brillant idéal américain tel que conçu par Marcel Tolkowsky.

Spanish

Save record 18

Record 19 2004-04-28

English

Subject field(s)
  • Gemmology
  • Diamond Industry
DEF

A small facet, parallel to the table, cut at the pointed junction of the pavilion facets to prevent damage to the tip.

French

Domaine(s)
  • Gemmologie
  • Industrie diamantaire
DEF

Facette parallèle à la table, située à l'extrémité de la culasse d'une gemme taillée à facettes ou à degrés.

CONT

Si la pointe de culasse est conservée pointue, le diamant est dit avoir une colette fermée ou une culasse fermée.

OBS

[...] formée par la rencontre des pavillons à la base de la taille en brillant.

Spanish

Save record 19

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