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67 Cards in this Set

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CSO
CENTRAL SELLING ORGANIZATION FORMED BY DE BEERS
KIMBERLITE LAYERS
YELLOW GROUND=10-30M
BLUE GROUND=30-500M
HARD(GREY) GROUND=500M+ DEEP
MAJOR DIAMOMOND PRODUCTION
AFRICA-CONTINENET
AUSTRAILIA-LG. MINE ARGYLE
RUSSIA-LG. RESERVE
ALLUVIAL ROCKS
WASHED BY EONS OF STORMS AND ARE FOUND ON THE SURFACE
A MELANGE
RANDOM GROUPING OF STONES-SIMILAR IN SIZE AND CUT
KIMBERLITE
PIPES OF DIAMOND BEARING DEPOSITS
GRADEMAKER
INCLUSION THAT SETS THE GRADE NO MATTER WHAT OTHER PROBLEMS
GIRDLE
EDGE OF A FACETED STONE
ROUND BRILLIANT
57-58 FACETS-Prongs set on upper mains
Crown==32-33w/ table
8 Bezel
8 Star or Upper mains
16 Girdle
Pavilion==24-25 w/ culet
8 Mains
16 Lower girdle
# FACETS AND NAMES ON A BRILLIANT DIAMOND
CROWN
8 BEZEL OR UPPER MAIN FACETS
8 STAR FACETS
16 UPPER-GIRDLE FACETS
+TABLE
PAVILION
8 PAVILION OR MAIN FACETS
16 LOWER GIRDLE FACETS
+CULET
DIAMOND SIMULANTS
1. MOISONITE
2. CUBIC ZIRCONIA
3. GGG garnet, gallium, gadolinium
DTC
DIAMOND TRADING COMPANY REPLACED DE BEERS
DTC
DIAMOND TRADING COMPANY
PAVILION DEPTH-GIA
EXCELLENT=43%
VG/G=42-44%
AVERAGE=41-46%
BELOW AV.=<41->46%
TYPES OF DIAMOND CUTS
-ASSCHER'S TRILLIANT&CONTTEMP
-EMERALD TRADITIONAL AND SQU
-STARBURST
-SQUARE CUTS=PRINCESS, BARION, RADIANT, QUADRILLION
-BAGUETTE=LONG RECT
-TAPERED BAGUETTE
MEASUREMENT OF PROPORTIONS
ALL PROPORTIONS AS A % OF THE GIRDLE
ROUND CUTS (D)
MODERN BRILLIANT
SINGLE CUT
SWISS CUT
BRUTING
ROUNDING OUT A ROUGH STONE
EARLY CUTS
OEC-OLD EUROPEAN CUT
OLD MINE CUT
NORMAL COLOR RANGE
YELLOWISH-->BROWNISH-->GRAYISH

ALL OTHER COLORS ARE FANCY
OTHER BRILLIANT CUTS
OVAL
HEART
MARQUISE
PEAR
HOPE DIAMOND
BIGGEST DARK BLUE DIAMOND S/ CURSE AND IS IN THE SMITHSONIAN
DIAMOND STATS
CRYSTAL-ISOMETRIC (CUBIC)
CLEAVAGE-4 WAY PEFECT
BREAK/FRACTURE-STEP LIKE
RI-2.417
SG-3.52
DISPERSION-.044
+
BOW-TIE
CAUSED BY 2 VARIATION IN LIGHT ANGLES
LOOKING THROUGH THE TABLE AT THE CULET--REFLECTION OF THE STAR FACETS IN THE PAVILION
CRITICAL ANGLE (D)
24 DEGREES 26 MINUTES
ADAMAS
INVINCIBLE
FANCY CUTS
MARIGOLD-73 FACETS
DAHLIA-12 SIDED OVAL
ZINNIA
SUNFLOWER
FIREROSE
MARQUISE DREAM CUT==MORE TABLES
PEAR DREAM CUT
OVAL DREAM CUT
DIAMOND CUTTING CENTERS
ANTWERP
TEL AVIV-RAMATGAN
INDIA
USA
YAHUDA
PATENTED FRACTURE FILLED MANUFACTURER
PHANTOM
EVIDENCE OF THE GROWTH PATTERN IN A SYNTHETIC DIAMOND OR GEM
CLEAVAGE
4-WAY PERFECT CLEAVAGE
1ST AFRICAN DIAMOND
CALLED "EUREKA" AND CUT INTO 10.73CT.
DIAMOND CERTIFICATIONS
CALLED-PLOT DIAMONDS
GREEN-BLEMISHES
RED-INCLUSIONS
BLACK-PRONGS AND EXTRA FACETS
SYNTHETIC DIAMONDS
CHEAPEST-->FLAME FUSION
MOST EXPENSIVE-->FLUX W/ SEED PLATE AND GROWN
DISPERSION
.044
BRILLIANT CUT-EULITZ
YR. 1976
CROWN HT.>14.45%
GIRDLE THICKNESS>1.50%
PAV. DEPTH>43.15%
TABLE DIAM.>56.50%
TYPES OF DIAMONDS
1a, 1b, 2a, 2b
1a ~98%
2b CONTAINS BORON FOR BLUE COLOR
IDEAL BRILLIANT CUT PROPORTIONS
1926
CROWN HT.>19.2%
PAVILLION DEPTH>40.0%
TABLE DIAM.>56.1%
FISHEYE

NAILHEAD
39% PAV

49% PAV
DIAMOND MUST HAVE AT LEAST 17 POLISHED FACETS
+
CROWN
32 OR 33 W/ TABLE FACETS
DIAMONDS ARE SORTED INTO 14,000 DIFFERENT CATAGORIES
+
LEVERAGE GAUGE
USED TO MEASURE STONES
SWINDLE TABLE
65% OR LARGER
CULLINAN I
530.20 CTS.
PLACED IN THE ROYAL SCEPTRE
ROUGH--3106 CTS.
HTHP
HIGH TEMP/HIGH PRESSURE
CHAMPAGNE DIAMONDS
C1-C7
DARKEST IS COGNAC
TABLE
SWINDLE
55-62 DEGREEES
65+
OEC
OLD EUROPEAN CUT
BEARDING
SMALL FEATHERS FROM EDGE OF GIRDLE INTO THE STONE
ROUNDING DIAMOND WEGHTS
ONLY TO .00
INT. 1.009->1.01
1.008->1.00
AMERICAN
1.005->1.01
1.004->1.00
COMMON HABIT (D)
OCTEHEDRON
LUSTRE
REFLECTION OF LIGHT OFF OF THE SURFACE
BRILLIANCE
WHITE LIGHT RETURNING FROM THE STONE
DISPERSION
SCATTERING OF LIGHT INTO SPECTRAL COLORS

CALLED "FIRE" OR "LIFE"
SCINTILLATION
COMBINATION OF LUSTRE, BRILLIANCE, AND DISPERSION
CLARITY GRADING
SIZE
NUMBER
COLOR
LOCATION
TYPE/KIND
VALUE OF DIAMOND
50% COLOR
35% CLARITY
15% CUT
+
15% FANCY CUT
15%-30% PANTENTED CUT
MELEE (MAY-LAY)
LESS THAN .200 CTS.
SWINDLE TABLE
65 % OR GREATER
PIQUE(PEE-KAY)
LOW END OF CLARITY GRADED STONES
DARK FIELD
LIGHT USED WITH MICROSCOPE TO DETECT INCLUSIONS
KEEL LINE
CULET ON A FANCY CUT STONE
S.G. DIAMOND
3.52
R.I. DIAMOND
2.417 OR 2.42
MARQUIS (MARKEES)
2 POINTED CUT
PAVILLION
24 OR 25 W/ CULET FACETS