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Radiant|Natural|GIA

2.51ct H SI2 Radiant Natural Diamond

EX • H/SI2 • GIA 1429328624

Certificate GIA 1429328624

Diamond specifications and retailer prices

From $30,136 AUD
$21,169 USD
As of November 1, 2026
Save $20,558 AUD (41%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $50,694 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 2.51ct natural radiant diamond

This 2.51ct natural radiant sits in the two to three carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1429328624. Listed at 9 retailers as of November 1, 2026, with prices from $30,136 to $50,694, a $20,558 spread on the same certified stone. MOH London lists it at $50,694. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1429328624
Dimensions8.79 × 6.65 × 4.60 mm
L/W Ratio1.32
Culet sizeNone
Cert comments
Additional clouds are not shown. Pinpoints are not shown.
Top View
8.79 mm6.65 mm2.51 ctH / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 1429328624
Side View
Table 64.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $50,694 AUD|Low: $30,136 AUD|High: $51,305 AUD|Avg: $38,354 AUD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 9$30,136 AUD
Retailer 2$33,311 AUD
Retailer 5$34,082 AUD
Retailer 7$35,164 AUD
Retailer 6$36,517 AUD
Retailer 3$37,347 AUD
Retailer 4$39,384 AUD
Retailer 8$45,984 AUD
MOH London$50,694 AUD

31 data points across 9 retailers

9 retailers$30,136 AUD to $50,694 AUD

B+
Cheapest Retailer
-
$30,136 AUD
$21,169 USD
B+
Retailer 2
-
$33,311 AUD
£18,425 GBP
View
B+
Retailer 3
-
$34,082 AUD
$23,941 USD
View
B+
Retailer 4
-
$35,164 AUD
$24,701 USD
View
B
Retailer 5
-
$36,517 AUD
$25,651 USD
View
B
Retailer 6
-
$37,347 AUD
£20,657 GBP
View
B
Retailer 7
-
$39,384 AUD
€26,348 EUR
View
B
Retailer 8
-
$45,984 AUD
$32,301 USD
View
Most Expensive
B
MOH London
A0B044684 · Nov 1
$50,694 AUD
£28,039 GBP
View
8 more retailers have this diamond
Prices start from $30,136 AUDSave up to $20,558 AUD

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.

B+
2.51ct Radiant
$30,136 AUD