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Marquise|Natural|GIA

1.21ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 2245057364

Certificate GIA 2245057364

Diamond specifications and retailer prices

From $4,661 SGD
As of November 4, 2026
Save $3,694 SGD (44%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $8,355 SGD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.21ct natural marquise diamond

This 1.21ct natural marquise sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2245057364. Listed at 13 retailers as of November 4, 2026, with prices from $4,661 to $8,355, a $3,694 spread on the same certified stone. Helzberg Diamonds lists it at $8,355. 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

1.21
Carat
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.96°
Pavilion angle37.63°
OriginNatural
Grading LabGIA
CertificateGIA 2245057364
Dimensions10.52 × 5.56 × 3.39 mm
L/W Ratio1.89
Culet sizeNone
Top View
10.52 mm5.56 mm1.21 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245057364
Side View
Table 58.0%Crown 39.96°Girdle: STK-THKPavilion 37.63°Culet: NoneDepth 61.0%

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 4
Current: $8,355 SGD|Low: $4,661 SGD|High: $8,966 SGD|Avg: $5,912 SGD|-6.8%
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
November 6, 2026
Retailer 10$4,661 SGD
Retailer 4$4,779 SGD
Retailer 8$4,873 SGD
Retailer 7$4,982 SGD
Retailer 3$5,087 SGD
Retailer 5$5,126 SGD
Retailer 6$5,347 SGD
Retailer 9$5,767 SGD
Retailer 12$5,908 SGD
Retailer 13$5,954 SGD
Retailer 2$5,991 SGD
Retailer 11$8,321 SGD
Helzberg Diamonds$8,355 SGD

39 data points across 13 retailers

13 retailers$4,661 SGD to $8,355 SGD

A
Cheapest Retailer
-
$4,661 SGD
A
Retailer 2
-
$4,779 SGD
View
A
Retailer 3
-
$4,873 SGD
View
B+
Retailer 4
-
$4,982 SGD
View
B+
Retailer 5
-
$5,087 SGD
View
Retailer 6
-
$5,126 SGD
View
Price last confirmed 10 days ago
B+
Retailer 7
-
$5,347 SGD
View
B+
Retailer 8
-
$5,767 SGD
View
B+
Retailer 9
-
$5,908 SGD
View
B+
Retailer 10
-
$5,954 SGD
View
B+
Retailer 11
-
$5,991 SGD
View
B
Retailer 12
-
$8,321 SGD
View
Most Expensive
B
Helzberg Diamonds
XZRIIKLGLNJMK · Nov 6
$8,355 SGD
$6,519 USD
View
12 more retailers have this diamond
Prices start from $4,661 SGDSave up to $3,694 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
1.21ct Marquise
$4,661 SGD