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Marquise|Natural|IGI

1.20ct H SI1 Marquise Natural Diamond

VG • H/SI1 • IGI 819640232

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 819640232

Diamond specifications and retailer prices

From $3,882 SGD
As of November 5, 2026
Save $5,052 SGD (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $8,934 SGD 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 H colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 819640232. Listed at 8 retailers as of November 5, 2026, with prices from $3,882 to $8,934, a $5,052 spread on the same certified stone. NZ Jewellers lists it at $8,934. 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
H
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle44.5°
Pavilion angle37.6°
OriginNatural
Grading LabIGI
CertificateIGI 819640232
Dimensions10.81 × 5.37 × 3.43 mm
L/W Ratio2.01
Girdle conditionFaceted
Culet sizeNone
Top View
10.81 mm5.37 mm1.20 ctH / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 819640232
Side View
Table 58.0%Crown 44.5°Girdle: MED-STKPavilion 37.6°Culet: NoneDepth 63.9%

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 5
Current: $8,934 SGD|Low: $3,770 SGD|High: $9,489 SGD|Avg: $6,388 SGD|-5.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 4$3,882 SGD
Retailer 8$4,970 SGD
Retailer 2$4,975 SGD
Retailer 5$5,128 SGD
Retailer 7$5,128 SGD
Retailer 3$5,720 SGD
Retailer 6$8,575 SGD
NZ Jewellers$8,934 SGD

41 data points across 8 retailers

8 retailers$3,882 SGD to $8,934 SGD

A
Cheapest Retailer
-
$3,882 SGD
B+
Retailer 2
-
$4,970 SGD
View
B+
Retailer 3
-
$4,975 SGD
View
B
Retailer 4
-
$5,128 SGD
View
B
Retailer 5
-
$5,128 SGD
View
B
Retailer 6
-
$5,720 SGD
View
B
Retailer 7
-
$8,575 SGD
View
Most Expensive
B
NZ Jewellers
feacff89-567c-431f-b9b9-fe8b2b88d6d9 · Nov 5
$8,934 SGD
$6,971 USD
View
7 more retailers have this diamond
Prices start from $3,882 SGDSave up to $5,052 SGD

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
$3,882 SGD