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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 $3,299 SGD
As of November 6, 2026
Save $4,413 SGD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $7,711 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 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 $3,299 to $7,711, a $4,413 spread on the same certified stone. NZ Jewellers lists it at $7,711. 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: $7,711 SGD|Low: $3,299 SGD|High: $7,796 SGD|Avg: $4,829 SGD|-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$3,299 SGD
Retailer 6$3,928 SGD
Retailer 9$4,172 SGD
Retailer 4$4,236 SGD
Retailer 16$4,268 SGD
Retailer 12$4,293 SGD
Retailer 10$4,425 SGD
Retailer 18$4,425 SGD
Retailer 3$4,596 SGD
Retailer 17$4,611 SGD
Retailer 2$4,664 SGD
Retailer 5$4,684 SGD
Retailer 8$4,844 SGD
Retailer 13$4,851 SGD
Retailer 7$5,107 SGD
Retailer 14$5,402 SGD
Retailer 15$7,381 SGD
NZ Jewellers$7,711 SGD

20 data points across 18 retailers

18 retailers$3,299 SGD to $7,711 SGD

A
Cheapest Retailer
-
$3,299 SGD
B+
Retailer 2
-
$3,928 SGD
View
B+
Retailer 3
-
$4,172 SGD
View
B+
Retailer 4
-
$4,236 SGD
View
B+
Retailer 5
-
$4,268 SGD
View
B+
Retailer 6
-
$4,293 SGD
View
Retailer 7
-
$4,425 SGD
View
Price last confirmed 9 days ago
B+
Retailer 8
-
$4,425 SGD
View
B+
Retailer 9
-
$4,596 SGD
View
B+
Retailer 10
-
$4,611 SGD
View
B+
Retailer 11
-
$4,664 SGD
View
B+
Retailer 12
-
$4,684 SGD
View
B+
Retailer 13
-
$4,844 SGD
View
B+
Retailer 14
-
$4,851 SGD
View
B
Retailer 15
-
$5,107 SGD
View
B
Retailer 16
-
$5,402 SGD
View
B
Retailer 17
-
$7,381 SGD
View
Most Expensive
B
NZ Jewellers
8768dbb9-f8f5-49af-beaf-a7d36c813bfe · Nov 5
$7,711 SGD
$6,017 USD
View
17 more retailers have this diamond
Prices start from $3,299 SGDSave up to $4,413 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
$3,299 SGD