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Round|Natural|GIA

2.51ct E SI2 Round Natural Diamond

EX • E/SI2 • GIA 2231730419

Certificate GIA 2231730419

Diamond specifications and retailer prices

From $35,614 NZD
$20,072 USD
As of October 30, 2026
Save $19,706 NZD (36%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $55,320 NZD at MOH London · As of October 29, 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 E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2231730419. Listed at 7 retailers as of October 29, 2026, with prices from $35,614 to $55,320, a $19,706 spread on the same certified stone. MOH London lists it at $55,320. 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
E
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2231730419
Dimensions8.65 × 8.59 × 5.38 mm
L/W Ratio1.01
Girdle conditionSlightly Thick
Key to symbols
Crystal, Needle
Top View
8.65 mm8.59 mm2.51 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2231730419
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.6°Culet: NoneDepth 62.4%

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 30
Current: $55,320 NZD|Low: $35,614 NZD|High: $56,843 NZD|Avg: $43,795 NZD|-1.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 6$35,614 NZD
Retailer 9$39,932 NZD
Retailer 5$40,142 NZD
Retailer 2$40,661 NZD
Retailer 7$40,836 NZD
Retailer 3$42,131 NZD
Retailer 8$43,671 NZD
Retailer 4$49,913 NZD
MOH London$55,320 NZD

31 data points across 9 retailers

7 retailers$35,614 NZD to $55,320 NZD

A
Cheapest Retailer
-
$35,614 NZD
$20,072 USD
A
Retailer 2
-
$40,142 NZD
$22,624 USD
View
A
Retailer 3
-
$40,661 NZD
£18,044 GBP
View
A
Retailer 4
-
$40,836 NZD
$23,015 USD
View
A
Retailer 5
-
$42,131 NZD
$23,745 USD
View
B+
Retailer 6
-
$49,913 NZD
$28,131 USD
View
Most Expensive
B+
MOH London
47F7D996C · Oct 29
$55,320 NZD
£24,550 GBP
View
6 more retailers have this diamond
Prices start from $35,614 NZDSave up to $19,706 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
$35,614 NZD