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Round|Natural|GIA

2.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 1539231448

Certificate GIA 1539231448

Diamond specifications and retailer prices

From $34,872 NZD
$19,621 USD
As of November 2, 2026
Save $29,182 NZD (46%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $64,054 NZD at MOH London · As of November 1, 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1539231448. Listed at 11 retailers as of November 1, 2026, with prices from $34,872 to $64,054, a $29,182 spread on the same certified stone. MOH London lists it at $64,054. 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
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 1539231448
Dimensions8.61 × 8.65 × 5.42 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizeNone
Cert comments
Additional twinning wisps, additional clouds, pinpoints and surface graining are not shown.
Top View
8.61 mm8.65 mm2.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1539231448
Side View
Table 56.0%Crown 36.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.8%

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: $64,054 NZD|Low: $34,872 NZD|High: $64,826 NZD|Avg: $46,170 NZD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 7$34,872 NZD
Retailer 4$39,970 NZD
Retailer 2$41,014 NZD
Retailer 6$41,239 NZD
Retailer 8$42,232 NZD
Retailer 9$47,761 NZD
Retailer 5$48,856 NZD
Retailer 3$49,543 NZD
MOH London$64,054 NZD

43 data points across 9 retailers

11 retailers$34,872 NZD to $64,054 NZD

A
Cheapest Retailer
-
$34,872 NZD
$19,621 USD
B+
Retailer 2
-
$38,139 NZD
$21,459 USD
View
B+
Retailer 3
-
$39,970 NZD
$22,489 USD
View
B+
Retailer 4
-
$41,014 NZD
£18,171 GBP
View
B+
Retailer 5
-
$41,239 NZD
$23,203 USD
View
B+
Retailer 6
-
$42,232 NZD
$23,762 USD
View
Retailer 7
-
$47,761 NZD
£21,160 GBP
View
Price last confirmed 33 days ago
B+
Retailer 8
-
$48,856 NZD
$27,489 USD
View
B
Retailer 9
-
$49,543 NZD
€26,548 EUR
View
B
Retailer 10
-
$58,103 NZD
$32,692 USD
View
Most Expensive
B
MOH London
82FF63EEA · Nov 1
$64,054 NZD
£28,378 GBP
View
10 more retailers have this diamond
Prices start from $34,872 NZDSave up to $29,182 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
$34,872 NZD