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Marquise|Natural|GIA

1.20ct I SI1 Marquise Natural Diamond

VG • I/SI1 • GIA 1563074038

Certificate GIA 1563074038

Diamond specifications and retailer prices

From $6,619 NZD
As of November 4, 2026
Save $5,242 NZD (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $11,861 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1563074038. Listed at 14 retailers as of November 4, 2026, with prices from $6,619 to $11,861, a $5,242 spread on the same certified stone. Helzberg Diamonds lists it at $11,861. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.20
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.82°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1563074038
Dimensions10.56 × 5.39 × 3.53 mm
L/W Ratio1.96
Culet sizeNone
Top View
10.56 mm5.39 mm1.20 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1563074038
Side View
Table 58.0%Crown 39.82°Girdle: STK-VTKPavilion 41°Culet: NoneDepth 65.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $11,861 NZD|Low: $6,619 NZD|High: $12,604 NZD|Avg: $8,663 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
Retailer 12
Retailer 13
Retailer 14
November 7, 2026
Retailer 11$6,619 NZD
Retailer 13$6,723 NZD
Retailer 10$6,918 NZD
Retailer 6$6,932 NZD
Retailer 9$7,073 NZD
Retailer 5$7,223 NZD
Retailer 2$7,636 NZD
Retailer 3$8,385 NZD
Retailer 4$8,448 NZD
Retailer 8$8,507 NZD
Retailer 7$9,182 NZD
Retailer 12$11,163 NZD
Retailer 14$11,783 NZD
Helzberg Diamonds$11,861 NZD

26 data points across 14 retailers

14 retailers$6,619 NZD to $11,861 NZD

B+
Cheapest Retailer
-
$6,619 NZD
B+
Retailer 2
-
$6,723 NZD
View
B+
Retailer 3
-
$6,918 NZD
View
B+
Retailer 4
-
$6,932 NZD
View
B+
Retailer 5
-
$7,073 NZD
View
B+
Retailer 6
-
$7,223 NZD
View
B
Retailer 7
-
$7,636 NZD
View
B
Retailer 8
-
$8,385 NZD
View
B
Retailer 9
-
$8,448 NZD
View
B
Retailer 10
-
$8,507 NZD
View
B
Retailer 11
-
$9,182 NZD
View
B
Retailer 12
-
$11,163 NZD
View
B
Retailer 13
-
$11,783 NZD
View
Most Expensive
B
Helzberg Diamonds
XZRHLMJGNKGJO · Nov 6
$11,861 NZD
$6,575 USD
View
13 more retailers have this diamond
Prices start from $6,619 NZDSave up to $5,242 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.

B+
1.20ct Marquise
$6,619 NZD