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Marquise|Natural|GIA

1.20ct D SI2 Marquise Natural Diamond

EX • D/SI2 • GIA 3555937032

Certificate GIA 3555937032

Diamond specifications and retailer prices

From $6,615 NZD
As of November 4, 2026
Save $5,239 NZD (44%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $11,853 NZD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3555937032. Listed at 11 retailers as of November 4, 2026, with prices from $6,615 to $11,853, a $5,239 spread on the same certified stone. Helzberg Diamonds lists it at $11,853. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.20
Carat
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle38.76°
Pavilion angle40.92°
OriginNatural
Grading LabGIA
CertificateGIA 3555937032
Dimensions10.44 × 5.50 × 3.54 mm
L/W Ratio1.90
Culet sizeNone
Top View
10.44 mm5.50 mm1.20 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 3555937032
Side View
Table 57.0%Crown 38.76°Girdle: THN-THKPavilion 40.92°Culet: NoneDepth 64.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $11,853 NZD|Low: $6,615 NZD|High: $12,593 NZD|Avg: $8,517 NZD|-5.9%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 7$6,615 NZD
Retailer 6$6,671 NZD
Retailer 5$6,775 NZD
Retailer 8$7,069 NZD
Retailer 11$7,221 NZD
Retailer 4$7,587 NZD
Retailer 9$8,379 NZD
Retailer 10$8,442 NZD
Retailer 2$8,504 NZD
Retailer 3$11,843 NZD
Helzberg Diamonds$11,853 NZD

42 data points across 11 retailers

11 retailers$6,615 NZD to $11,853 NZD

A
Cheapest Retailer
-
$6,615 NZD
A
Retailer 2
-
$6,671 NZD
View
A
Retailer 3
-
$6,775 NZD
View
A
Retailer 4
-
$7,069 NZD
View
A
Retailer 5
-
$7,221 NZD
View
A
Retailer 6
-
$7,587 NZD
View
B+
Retailer 7
-
$8,379 NZD
View
B+
Retailer 8
-
$8,442 NZD
View
B+
Retailer 9
-
$8,504 NZD
View
B
Retailer 10
-
$11,843 NZD
View
Most Expensive
B
Helzberg Diamonds
XZRJLLLPJNGJI · Nov 6
$11,853 NZD
$6,571 USD
View
10 more retailers have this diamond
Prices start from $6,615 NZDSave up to $5,239 NZD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.20ct Marquise
$6,615 NZD