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Round|Natural|GIA

2.51ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 6565453058

Certificate GIA 6565453058

Diamond specifications and retailer prices

From $40,434 NZD
$22,750 USD
As of November 2, 2026
Save $23,936 NZD (37%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $64,370 NZD at MOH London · As of November 2, 2026
View at MOH London

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 6565453058. Listed at 8 retailers as of November 2, 2026, with prices from $40,434 to $64,370, a $23,936 spread on the same certified stone. MOH London lists it at $64,370. 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
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6565453058
Dimensions8.59 × 8.64 × 5.39 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Feather, Cloud, Crystal, Needle, Indented Natural
Top View
8.59 mm8.64 mm2.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6565453058
Side View
Table 58.0%Crown 36°GirdlePavilion 40.8°Culet: NoneDepth 62.6%

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: Nov 2
Current: $64,370 NZD|Low: $40,434 NZD|High: $66,706 NZD|Avg: $51,156 NZD|-3.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 7$40,434 NZD
Retailer 6$41,301 NZD
Retailer 2$47,420 NZD
Retailer 4$47,770 NZD
Retailer 8$49,286 NZD
Retailer 3$56,900 NZD
Retailer 5$58,390 NZD
MOH London$64,370 NZD

33 data points across 8 retailers

8 retailers$40,434 NZD to $64,370 NZD

A
Cheapest Retailer
-
$40,434 NZD
$22,750 USD
A
Retailer 2
-
$41,301 NZD
$23,238 USD
View
B+
Retailer 3
-
$47,420 NZD
£21,008 GBP
View
B+
Retailer 4
-
$47,770 NZD
$26,878 USD
View
B+
Retailer 5
-
$49,286 NZD
$27,731 USD
View
B+
Retailer 6
-
$56,900 NZD
$32,015 USD
View
B+
Retailer 7
-
$58,390 NZD
$32,853 USD
View
Most Expensive
B
MOH London
44F2EE7EC · Nov 2
$64,370 NZD
£28,518 GBP
View
7 more retailers have this diamond
Prices start from $40,434 NZDSave up to $23,936 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
$40,434 NZD