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Round|Natural|GIA

2.51ct H SI2 Round Natural Diamond

EX • H/SI2 • GIA 6392995370

Certificate GIA 6392995370

Diamond specifications and retailer prices

From $27,762 AUD
$19,501 USD
As of October 30, 2026
Save $19,654 AUD (41%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $47,416 AUD 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 H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6392995370. Listed at 14 retailers as of October 29, 2026, with prices from $27,762 to $47,416, a $19,654 spread on the same certified stone. MOH London lists it at $47,416. 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°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6392995370
Dimensions8.61 × 8.66 × 5.40 mm
L/W Ratio1.01
Star length50%
Lower girdle80%
Top View
8.61 mm8.66 mm2.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6392995370
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.5%

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: $47,416 AUD|Low: $27,306 AUD|High: $47,732 AUD|Avg: $34,944 AUD|+0.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 3$27,306 AUD
Retailer 6$27,762 AUD
Retailer 12$30,199 AUD
Retailer 2$30,886 AUD
Retailer 8$31,709 AUD
Retailer 10$32,716 AUD
Retailer 11$33,974 AUD
Retailer 7$35,167 AUD
Retailer 5$36,643 AUD
Retailer 4$40,519 AUD
Retailer 9$42,782 AUD
MOH London$47,416 AUD

41 data points across 12 retailers

14 retailers$27,762 AUD to $47,416 AUD

A
Cheapest Retailer
-
$27,762 AUD
$19,501 USD
B+
Retailer 2
-
$30,199 AUD
$21,213 USD
View
B+
Retailer 3
-
$30,886 AUD
£17,083 GBP
View
B+
Retailer 4
-
$31,709 AUD
$22,274 USD
View
B+
Retailer 5
-
$32,672 AUD
$22,950 USD
View
B+
Retailer 6
-
$32,672 AUD
$22,950 USD
View
B+
Retailer 7
-
$32,716 AUD
$22,981 USD
View
B+
Retailer 8
-
$33,754 AUD
$23,710 USD
View
B
Retailer 9
-
$33,974 AUD
$23,865 USD
View
Retailer 10
-
$35,167 AUD
£19,451 GBP
View
Price last confirmed 31 days ago
B
Retailer 11
-
$36,643 AUD
€24,514 EUR
View
B
Retailer 12
-
$42,782 AUD
$30,052 USD
View
B
Retailer 13
-
$46,052 AUD
£25,472 GBP
View
Most Expensive
B
MOH London
ADEFF7D67 · Oct 29
$47,416 AUD
£26,226 GBP
View
13 more retailers have this diamond
Prices start from $27,762 AUDSave up to $19,654 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.

A
2.51ct Round
$27,762 AUD