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Round|Natural|GIA

2.51ct G SI2 Round Natural Diamond

EX • G/SI2 • GIA 1523286056

Certificate GIA 1523286056

Diamond specifications and retailer prices

From $27,725 AUD
$19,475 USD
As of October 25, 2026
Save $20,866 AUD (43%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $48,591 AUD at MOH London · As of October 26, 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 G colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1523286056. Listed at 16 retailers as of October 25, 2026, with prices from $27,725 to $48,591, a $20,866 spread on the same certified stone. MOH London lists it at $48,591. 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
G
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle32°
Pavilion angle41.8°
OriginNatural
Grading LabGIA
CertificateGIA 1523286056
Dimensions8.80 × 8.74 × 5.38 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Cert comments
Additional twinning wisps, pinpoints and surface graining are not shown.
Top View
8.80 mm8.74 mm2.51 ctG / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1523286056
Side View
Table 59.0%Crown 32°Girdle: THN-STKPavilion 41.8°Culet: NoneDepth 61.4%

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 25
Current: $48,591 AUD|Low: $27,725 AUD|High: $49,110 AUD|Avg: $34,390 AUD|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 31, 2026
Retailer 11$27,725 AUD
Retailer 6$28,455 AUD
Retailer 14$28,565 AUD
Retailer 5$31,071 AUD
Retailer 2$31,322 AUD
Retailer 4$32,509 AUD
Retailer 15$32,625 AUD
Retailer 3$33,512 AUD
Retailer 12$33,512 AUD
Retailer 7$33,661 AUD
Retailer 13$34,622 AUD
Retailer 16$34,955 AUD
Retailer 9$35,858 AUD
Retailer 10$36,473 AUD
Retailer 8$44,018 AUD
MOH London$48,591 AUD

38 data points across 16 retailers

16 retailers$27,725 AUD to $48,591 AUD

A
Cheapest Retailer
-
$27,725 AUD
$19,475 USD
A
Retailer 2
-
$28,455 AUD
$19,988 USD
View
A
Retailer 3
-
$28,565 AUD
$20,065 USD
View
A
Retailer 4
-
$31,071 AUD
$21,826 USD
View
A
Retailer 5
-
$31,322 AUD
£17,325 GBP
View
B+
Retailer 6
-
$32,509 AUD
$22,836 USD
View
B+
Retailer 7
-
$32,625 AUD
$22,917 USD
View
B+
Retailer 8
-
$33,512 AUD
$23,540 USD
View
B+
Retailer 9
-
$33,512 AUD
$23,540 USD
View
B+
Retailer 10
-
$33,661 AUD
$23,645 USD
View
B+
Retailer 11
-
$34,622 AUD
$24,320 USD
View
B+
Retailer 12
-
$34,955 AUD
$24,554 USD
View
B+
Retailer 13
-
$35,858 AUD
£19,833 GBP
View
B+
Retailer 14
-
$36,473 AUD
€24,400 EUR
View
B
Retailer 15
-
$44,018 AUD
$30,920 USD
View
Most Expensive
B
MOH London
192A2BDAA · Oct 26
$48,591 AUD
£26,876 GBP
View
15 more retailers have this diamond
Prices start from $27,725 AUDSave up to $20,866 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
$27,725 AUD