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Marquise|Natural|GIA

1.20ct I SI2 Marquise Natural Diamond

EX • I/SI2 • GIA 2557877511

Certificate GIA 2557877511

Diamond specifications and retailer prices

From $3,810 SGD
As of November 6, 2026
Save $5,101 SGD (57%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $8,911 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557877511. Listed at 19 retailers as of November 5, 2026, with prices from $3,810 to $8,911, a $5,101 spread on the same certified stone. NZ Jewellers lists it at $8,911. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.20
Carat
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557877511
Dimensions10.35 × 5.44 × 3.47 mm
L/W Ratio1.90
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Twinning Wisp, Cavity, Needle
Top View
10.35 mm5.44 mm1.20 ctI / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557877511
Side View
Table 59.0%CrownGirdle: THK-VTKPavilionCulet: NDepth 63.9%

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: $8,911 SGD|Low: $3,810 SGD|High: $8,911 SGD|Avg: $5,545 SGD
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
November 7, 2026
Retailer 7$3,810 SGD
Retailer 13$4,762 SGD
Retailer 4$4,857 SGD
Retailer 8$5,029 SGD
Retailer 3$5,115 SGD
Retailer 11$5,115 SGD
Retailer 12$5,115 SGD
Retailer 2$5,180 SGD
Retailer 5$5,216 SGD
Retailer 6$5,428 SGD
Retailer 9$5,611 SGD
Retailer 14$5,902 SGD
Retailer 10$8,552 SGD
NZ Jewellers$8,911 SGD

30 data points across 14 retailers

19 retailers$3,810 SGD to $8,911 SGD

A
Cheapest Retailer
-
$3,810 SGD
B+
Retailer 2
-
$4,065 SGD
View
Final sale: no returns
B+
Retailer 3
-
$4,251 SGD
View
B+
Retailer 4
-
$4,501 SGD
View
B+
Retailer 5
-
$4,762 SGD
View
B+
Retailer 6
-
$4,857 SGD
View
B+
Retailer 7
-
$5,029 SGD
View
B
Retailer 8
-
$5,115 SGD
View
B
Retailer 9
-
$5,115 SGD
View
Retailer 10
-
$5,115 SGD
View
Price last confirmed 9 days ago
B
Retailer 11
-
$5,180 SGD
View
B
Retailer 12
-
$5,216 SGD
View
B
Retailer 13
-
$5,302 SGD
View
B
Retailer 14
-
$5,428 SGD
View
B
Retailer 15
-
$5,447 SGD
View
B+
Retailer 16
-
$5,611 SGD
View
B
Retailer 17
-
$5,902 SGD
View
B
Retailer 18
-
$8,552 SGD
View
Most Expensive
C
NZ Jewellers
c2a31624-9175-4791-8f74-0e7976ecf87d · Nov 5
$8,911 SGD
$6,953 USD
View
18 more retailers have this diamond
Prices start from $3,810 SGDSave up to $5,101 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
$3,810 SGD