DIAMOND SET-I
Terms
undefined, object
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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
- 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
-
SCATTERING OF LIGHT INTO SPECTRAL COLORS
CALLED "FIRE" OR "LIFE" -
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 GREATER
- 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
- 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.
- 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