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Marquise|Natural|IGI

1.20ct I SI1 Marquise Natural Diamond

VG • I/SI1 • IGI 835613875

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 835613875

Diamond specifications and retailer prices

From $4,643 NZD
As of November 6, 2026
Save $6,211 NZD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $10,854 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

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 and certified by IGI 835613875. Listed at 18 retailers as of November 5, 2026, with prices from $4,643 to $10,854, a $6,211 spread on the same certified stone. NZ Jewellers lists it at $10,854. 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

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle36.8°
OriginNatural
Grading LabIGI
CertificateIGI 835613875
Dimensions10.43 × 5.51 × 3.46 mm
L/W Ratio1.89
Girdle conditionFaceted
Top View
10.43 mm5.51 mm1.20 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 835613875
Side View
Table 57.0%Crown 35.9°Girdle: STK-VTKPavilion 36.8°Culet: NoneDepth 62.8%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: $10,854 NZD|Low: $4,643 NZD|High: $10,973 NZD|Avg: $6,797 NZD|-1.1%
NZ Jewellers
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 7, 2026
Retailer 11$4,643 NZD
Retailer 6$5,529 NZD
Retailer 9$5,872 NZD
Retailer 4$5,962 NZD
Retailer 16$6,007 NZD
Retailer 12$6,043 NZD
Retailer 10$6,229 NZD
Retailer 18$6,229 NZD
Retailer 3$6,469 NZD
Retailer 17$6,490 NZD
Retailer 2$6,564 NZD
Retailer 5$6,593 NZD
Retailer 8$6,819 NZD
Retailer 13$6,828 NZD
Retailer 7$7,189 NZD
Retailer 14$7,603 NZD
Retailer 15$10,389 NZD
NZ Jewellers$10,854 NZD

20 data points across 18 retailers

18 retailers$4,643 NZD to $10,854 NZD

A
Cheapest Retailer
-
$4,643 NZD
B+
Retailer 2
-
$5,529 NZD
View
B+
Retailer 3
-
$5,872 NZD
View
B+
Retailer 4
-
$5,962 NZD
View
B+
Retailer 5
-
$6,007 NZD
View
B+
Retailer 6
-
$6,043 NZD
View
Retailer 7
-
$6,229 NZD
View
Price last confirmed 9 days ago
B+
Retailer 8
-
$6,229 NZD
View
B+
Retailer 9
-
$6,469 NZD
View
B+
Retailer 10
-
$6,490 NZD
View
B+
Retailer 11
-
$6,564 NZD
View
B+
Retailer 12
-
$6,593 NZD
View
B+
Retailer 13
-
$6,819 NZD
View
B+
Retailer 14
-
$6,828 NZD
View
B
Retailer 15
-
$7,189 NZD
View
B
Retailer 16
-
$7,603 NZD
View
B
Retailer 17
-
$10,389 NZD
View
Most Expensive
B
NZ Jewellers
8768dbb9-f8f5-49af-beaf-a7d36c813bfe · Nov 5
$10,854 NZD
$6,017 USD
View
17 more retailers have this diamond
Prices start from $4,643 NZDSave up to $6,211 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
$4,643 NZD