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Marquise|Natural|IGI

1.20ct I SI1 Marquise Natural Diamond

VG • I/SI1 • IGI 712558468

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 712558468

Diamond specifications and retailer prices

From $4,685 NZD
As of November 5, 2026
Save $5,231 NZD (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $9,916 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 712558468. Listed at 15 retailers as of November 5, 2026, with prices from $4,685 to $9,916, a $5,231 spread on the same certified stone. NZ Jewellers lists it at $9,916. 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 angle41.8°
Pavilion angle39.1°
OriginNatural
Grading LabIGI
CertificateIGI 712558468
Dimensions10.73 × 5.29 × 3.40 mm
L/W Ratio2.03
Girdle conditionFaceted
Top View
10.73 mm5.29 mm1.20 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 712558468
Side View
Table 60.0%Crown 41.8°Girdle: THK-VTKPavilion 39.1°Culet: NoneDepth 64.3%

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 5
Current: $9,916 NZD|Low: $4,658 NZD|High: $9,916 NZD|Avg: $6,388 NZD
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
November 7, 2026
Retailer 10$4,685 NZD
Retailer 6$5,098 NZD
Retailer 13$5,105 NZD
Retailer 4$5,150 NZD
Retailer 3$5,336 NZD
Retailer 14$5,581 NZD
Retailer 7$5,691 NZD
Retailer 2$5,879 NZD
Retailer 15$5,910 NZD
Retailer 12$6,507 NZD
Retailer 5$6,568 NZD
Retailer 9$6,812 NZD
Retailer 8$8,424 NZD
Retailer 11$9,308 NZD
NZ Jewellers$9,916 NZD

13 data points across 15 retailers

15 retailers$4,685 NZD to $9,916 NZD

A
Cheapest Retailer
-
$4,685 NZD
B+
Retailer 2
-
$5,098 NZD
View
A
Retailer 3
-
$5,105 NZD
View
B+
Retailer 4
-
$5,150 NZD
View
Final sale: no returns
B+
Retailer 5
-
$5,336 NZD
View
Retailer 6
-
$5,581 NZD
View
Price last confirmed 9 days ago
B+
Retailer 7
-
$5,691 NZD
View
B+
Retailer 8
-
$5,879 NZD
View
B+
Retailer 9
-
$5,910 NZD
View
B+
Retailer 10
-
$6,507 NZD
View
B
Retailer 11
-
$6,568 NZD
View
B
Retailer 12
-
$6,812 NZD
View
B
Retailer 13
-
$8,424 NZD
View
B
Retailer 14
-
$9,308 NZD
View
Most Expensive
B
NZ Jewellers
7882e09e-f60e-485f-a5cf-6d3b55008840 · Nov 5
$9,916 NZD
$5,497 USD
View
14 more retailers have this diamond
Prices start from $4,685 NZDSave up to $5,231 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
$4,685 NZD