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Marquise|Natural|GIA

1.21ct F SI2 Marquise Natural Diamond

GD • F/SI2 • GIA 1555561523

Certificate GIA 1555561523

Diamond specifications and retailer prices

From $4,109 SGD
As of November 4, 2026
Save $3,704 SGD (47%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $7,813 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 1555561523. Listed at 12 retailers as of November 4, 2026, with prices from $4,109 to $7,813, a $3,704 spread on the same certified stone. Helzberg Diamonds lists it at $7,813. 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

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

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.64°
Pavilion angle40.64°
OriginNatural
Grading LabGIA
CertificateGIA 1555561523
Dimensions9.96 × 5.47 × 3.68 mm
L/W Ratio1.82
Culet sizeNone
Top View
9.96 mm5.47 mm1.21 ctF / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555561523
Side View
Table 59.0%Crown 43.64°Girdle: STK-VTKPavilion 40.64°Culet: NoneDepth 67.3%

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: $7,813 SGD|Low: $4,109 SGD|High: $7,981 SGD|Avg: $5,489 SGD|-2.1%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 7$4,109 SGD
Retailer 6$4,295 SGD
Retailer 3$4,480 SGD
Retailer 5$4,716 SGD
Retailer 2$4,944 SGD
Retailer 11$4,950 SGD
Retailer 9$5,242 SGD
Retailer 10$5,317 SGD
Retailer 4$5,465 SGD
Retailer 8$7,365 SGD
Helzberg Diamonds$7,813 SGD

41 data points across 11 retailers

12 retailers$4,109 SGD to $7,813 SGD

A
Cheapest Retailer
-
$4,109 SGD
A
Retailer 2
-
$4,295 SGD
View
B+
Retailer 3
-
$4,480 SGD
View
B+
Retailer 4
-
$4,716 SGD
View
B+
Retailer 5
-
$4,944 SGD
View
B+
Retailer 6
-
$4,950 SGD
View
B+
Retailer 7
-
$5,242 SGD
View
B+
Retailer 8
-
$5,317 SGD
View
B+
Retailer 9
-
$5,465 SGD
View
B
Retailer 10
-
$5,766 SGD
View
B
Retailer 11
-
$7,365 SGD
View
Most Expensive
B
Helzberg Diamonds
XZRHLLLLMHLIJ · Nov 6
$7,813 SGD
$6,096 USD
View
11 more retailers have this diamond
Prices start from $4,109 SGDSave up to $3,704 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
$4,109 SGD