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Marquise|Natural|GIA

1.20ct I SI1 Marquise Natural Diamond

VG • I/SI1 • GIA 1563074038

Certificate GIA 1563074038

Diamond specifications and retailer prices

From $4,702 SGD
As of November 4, 2026
Save $3,724 SGD (44%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $8,427 SGD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

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 stated by the retailer rather than the lab and certified by GIA 1563074038. Listed at 14 retailers as of November 4, 2026, with prices from $4,702 to $8,427, a $3,724 spread on the same certified stone. Helzberg Diamonds lists it at $8,427. 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 (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.82°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 1563074038
Dimensions10.56 × 5.39 × 3.53 mm
L/W Ratio1.96
Culet sizeNone
Top View
10.56 mm5.39 mm1.20 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1563074038
Side View
Table 58.0%Crown 39.82°Girdle: STK-VTKPavilion 41°Culet: NoneDepth 65.6%

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 4
Current: $8,427 SGD|Low: $4,702 SGD|High: $8,955 SGD|Avg: $6,160 SGD|-5.9%
Helzberg Diamonds
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 6, 2026
Retailer 11$4,702 SGD
Retailer 13$4,777 SGD
Retailer 10$4,915 SGD
Retailer 6$4,925 SGD
Retailer 9$5,025 SGD
Retailer 5$5,132 SGD
Retailer 8$5,393 SGD
Retailer 3$5,957 SGD
Retailer 4$6,002 SGD
Retailer 7$6,044 SGD
Retailer 2$6,523 SGD
Retailer 12$7,931 SGD
Retailer 14$8,371 SGD
Helzberg Diamonds$8,427 SGD

25 data points across 14 retailers

14 retailers$4,702 SGD to $8,427 SGD

B+
Cheapest Retailer
-
$4,702 SGD
B+
Retailer 2
-
$4,777 SGD
View
B+
Retailer 3
-
$4,915 SGD
View
B+
Retailer 4
-
$4,925 SGD
View
B+
Retailer 5
-
$5,025 SGD
View
B+
Retailer 6
-
$5,132 SGD
View
B
Retailer 7
-
$5,393 SGD
View
B
Retailer 8
-
$5,957 SGD
View
B
Retailer 9
-
$6,002 SGD
View
B
Retailer 10
-
$6,044 SGD
View
B
Retailer 11
-
$6,523 SGD
View
B
Retailer 12
-
$7,931 SGD
View
B
Retailer 13
-
$8,371 SGD
View
Most Expensive
B
Helzberg Diamonds
XZRHLMJGNKGJO · Nov 6
$8,427 SGD
$6,575 USD
View
13 more retailers have this diamond
Prices start from $4,702 SGDSave up to $3,724 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
$4,702 SGD