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Marquise|Natural|GIA

1.20ct J SI1 Marquise Natural Diamond

ID • J/SI1 • GIA 7551009950

Certificate GIA 7551009950

Diamond specifications and retailer prices

From $4,505 SGD
As of November 6, 2026
Save $5,189 SGD (54%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $9,694 SGD at MOH London · As of November 4, 2026
View at MOH London

About this 1.2ct natural marquise diamond

This 1.2ct natural marquise sits in the classic one-carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 7551009950. Listed at 20 retailers as of November 4, 2026, with prices from $4,505 to $9,694, a $5,189 spread on the same certified stone. MOH London lists it at $9,694. 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
J
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7551009950
Dimensions10.45 × 5.51 × 3.48 mm
L/W Ratio1.90
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
10.45 mm5.51 mm1.20 ctJ / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 7551009950
Side View
Table 61.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 63.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $9,694 SGD|Low: $4,505 SGD|High: $9,837 SGD|Avg: $6,403 SGD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 9$4,505 SGD
Retailer 5$4,816 SGD
Retailer 12$4,965 SGD
Retailer 3$5,529 SGD
Retailer 10$5,620 SGD
Retailer 4$5,789 SGD
Retailer 7$5,974 SGD
Retailer 11$6,152 SGD
Retailer 6$6,480 SGD
Retailer 2$6,563 SGD
Retailer 8$7,446 SGD
MOH London$9,694 SGD

44 data points across 12 retailers

20 retailers$4,505 SGD to $9,694 SGD

B+
Cheapest Retailer
-
$4,505 SGD
B+
Retailer 2
-
$4,633 SGD
View
B
Retailer 3
-
$4,769 SGD
View
B+
Retailer 4
-
$4,816 SGD
View
B
Retailer 5
-
$4,866 SGD
View
B
Retailer 6
-
$4,876 SGD
View
B
Retailer 7
-
$5,501 SGD
View
Retailer 8
-
$5,529 SGD
View
Price last confirmed 13 days ago
B
Retailer 9
-
$5,620 SGD
View
B
Retailer 10
-
$5,695 SGD
View
Retailer 11
-
$5,771 SGD
View
Price last confirmed 15 days ago
B
Retailer 12
-
$5,789 SGD
View
B
Retailer 13
-
$5,974 SGD
View
Retailer 14
-
$6,152 SGD
View
Price last confirmed 29 days ago
B
Retailer 15
-
$6,345 SGD
View
B
Retailer 16
-
$6,480 SGD
View
B
Retailer 17
-
$6,563 SGD
View
B
Retailer 18
-
$7,446 SGD
View
B
Retailer 19
-
$8,830 SGD
View
Most Expensive
B
MOH London
CBFC25F1D · Nov 4
$9,694 SGD
£5,956 GBP
View
19 more retailers have this diamond
Prices start from $4,505 SGDSave up to $5,189 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.

B+
1.20ct Marquise
$4,505 SGD