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2.51ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 6552970879

Certificate GIA 6552970879

Diamond specifications and retailer prices

From $19,647 SGD
As of October 28, 2026
Save $10,750 SGD (35%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $30,397 SGD at Helzberg Diamonds · As of October 27, 2026
View at Helzberg Diamonds

About this 2.51ct natural round diamond

This 2.51ct natural round sits in the two to three carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552970879. Listed at 10 retailers as of October 27, 2026, with prices from $19,647 to $30,397, a $10,750 spread on the same certified stone. Helzberg Diamonds lists it at $30,397. 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

2.51
Carat
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6552970879
Dimensions8.64 × 8.68 × 5.39 mm
L/W Ratio1.00
Culet sizeNone
Top View
8.64 mm8.68 mm2.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6552970879
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.3%

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: Oct 28
Current: $30,397 SGD|Low: $19,647 SGD|High: $32,947 SGD|Avg: $24,328 SGD|-7.7%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 28, 2026
Retailer 2$19,647 SGD
Retailer 5$20,631 SGD
Retailer 7$20,882 SGD
Retailer 6$21,270 SGD
Retailer 4$21,524 SGD
Retailer 3$24,070 SGD
Retailer 10$24,284 SGD
Retailer 8$24,467 SGD
Retailer 9$25,559 SGD
Helzberg Diamonds$30,397 SGD

38 data points across 10 retailers

10 retailers$19,647 SGD to $30,397 SGD

A
Cheapest Retailer
-
$19,647 SGD
A
Retailer 2
-
$20,631 SGD
£12,707 GBP
View
Retailer 3
-
$20,882 SGD
$16,335 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$21,270 SGD
View
A
Retailer 5
-
$21,524 SGD
$16,837 USD
View
A
Retailer 6
-
$24,070 SGD
€17,932 EUR
View
A
Retailer 7
-
$24,284 SGD
$18,995 USD
View
A
Retailer 8
-
$24,467 SGD
$19,139 USD
View
A
Retailer 9
-
$25,559 SGD
$19,993 USD
View
Most Expensive
B+
Helzberg Diamonds
XZRMLLIPNGONP · Oct 27
$30,397 SGD
$23,777 USD
View
9 more retailers have this diamond
Prices start from $19,647 SGDSave up to $10,750 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
2.51ct Round
$19,647 SGD