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Marquise|Natural|GIA

1.21ct F SI2 Marquise Natural Diamond

EX • F/SI2 • GIA 2245000215

Certificate GIA 2245000215

Diamond specifications and retailer prices

From $4,865 SGD
As of November 4, 2026
Save $3,852 SGD (44%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $8,717 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 2245000215. Listed at 13 retailers as of November 4, 2026, with prices from $4,865 to $8,717, a $3,852 spread on the same certified stone. Helzberg Diamonds lists it at $8,717. 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 angle40.01°
Pavilion angle37.63°
OriginNatural
Grading LabGIA
CertificateGIA 2245000215
Dimensions10.59 × 5.59 × 3.39 mm
L/W Ratio1.89
Culet sizeNone
Top View
10.59 mm5.59 mm1.21 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2245000215
Side View
Table 58.0%Crown 40.01°Girdle: MED-THKPavilion 37.63°Culet: NoneDepth 60.7%

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: $8,717 SGD|Low: $4,865 SGD|High: $9,078 SGD|Avg: $6,246 SGD|-4.0%
Helzberg Diamonds
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 8$4,865 SGD
Retailer 6$4,983 SGD
Retailer 4$4,985 SGD
Retailer 9$5,153 SGD
Retailer 12$5,311 SGD
Retailer 7$5,612 SGD
Retailer 10$6,152 SGD
Retailer 11$6,189 SGD
Retailer 5$6,254 SGD
Retailer 2$6,749 SGD
Retailer 3$8,675 SGD
Helzberg Diamonds$8,717 SGD

35 data points across 12 retailers

13 retailers$4,865 SGD to $8,717 SGD

A
Cheapest Retailer
-
$4,865 SGD
A
Retailer 2
-
$4,983 SGD
View
A
Retailer 3
-
$4,985 SGD
View
B+
Retailer 4
-
$5,153 SGD
View
B+
Retailer 5
-
$5,311 SGD
View
B+
Retailer 6
-
$5,612 SGD
View
B+
Retailer 7
-
$6,152 SGD
View
B+
Retailer 8
-
$6,189 SGD
View
B+
Retailer 9
-
$6,254 SGD
View
B+
Retailer 10
-
$6,490 SGD
View
B+
Retailer 11
-
$6,749 SGD
View
B
Retailer 12
-
$8,675 SGD
View
Most Expensive
B
Helzberg Diamonds
XZRIIKLGGGIHL · Nov 6
$8,717 SGD
$6,802 USD
View
12 more retailers have this diamond
Prices start from $4,865 SGDSave up to $3,852 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
$4,865 SGD