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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 $27,314 NZD
SGD 20,768 SGD
As of October 28, 2026
Save $14,945 NZD (35%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $42,259 NZD 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 $27,314 to $42,259, a $14,945 spread on the same certified stone. Helzberg Diamonds lists it at $42,259. 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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: $42,259 NZD|Low: $27,314 NZD|High: $45,805 NZD|Avg: $33,829 NZD|-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$27,314 NZD
Retailer 5$28,682 NZD
Retailer 7$29,032 NZD
Retailer 6$29,571 NZD
Retailer 4$29,924 NZD
Retailer 3$33,464 NZD
Retailer 10$33,761 NZD
Retailer 8$34,016 NZD
Retailer 9$35,533 NZD
Helzberg Diamonds$42,259 NZD

37 data points across 10 retailers

10 retailers$27,314 NZD to $42,259 NZD

A
Cheapest Retailer
-
$27,314 NZD
SGD 20,768 SGD
A
Retailer 2
-
$28,682 NZD
£12,707 GBP
View
Retailer 3
-
$29,032 NZD
$16,335 USD
View
Price last confirmed 9 days ago
A
Retailer 4
-
$29,571 NZD
SGD 22,484 SGD
View
A
Retailer 5
-
$29,924 NZD
$16,837 USD
View
A
Retailer 6
-
$33,464 NZD
€17,932 EUR
View
A
Retailer 7
-
$33,761 NZD
$18,995 USD
View
A
Retailer 8
-
$34,016 NZD
$19,139 USD
View
Retailer 9
-
$35,533 NZD
$19,993 USD
View
Price last confirmed 7 days ago
Most Expensive
B+
Helzberg Diamonds
XZRMLLIPNGONP · Oct 27
$42,259 NZD
$23,777 USD
View
9 more retailers have this diamond
Prices start from $27,314 NZDSave up to $14,945 NZD

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
$27,314 NZD