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Radiant|Natural|GIA

2.51ct I SI1 Radiant Natural Diamond

EX • I/SI1 • GIA 1567577300

Certificate GIA 1567577300

Diamond specifications and retailer prices

From $26,458 AUD
HK$145,200 HKD
As of November 1, 2026
Save $21,916 AUD (45%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $48,374 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1567577300. Listed at 13 retailers as of November 1, 2026, with prices from $26,458 to $48,374, a $21,916 spread on the same certified stone. MOH London lists it at $48,374. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1567577300
Dimensions8.84 × 6.77 × 4.66 mm
L/W Ratio1.31
Culet sizeNone
Key to symbols
Cloud, Feather, Crystal
Top View
8.84 mm6.77 mm2.51 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1567577300
Side View
Table 63.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.7%

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 1
Current: $48,374 AUD|Low: $26,458 AUD|High: $48,634 AUD|Avg: $34,667 AUD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 12$26,458 AUD
Retailer 6$27,149 AUD
Retailer 4$31,497 AUD
Retailer 5$32,766 AUD
Retailer 3$33,305 AUD
Retailer 2$35,636 AUD
Retailer 11$35,771 AUD
Retailer 9$35,899 AUD
Retailer 10$37,039 AUD
Retailer 7$38,464 AUD
Retailer 8$43,881 AUD
MOH London$48,374 AUD

12 data points across 12 retailers

13 retailers$26,458 AUD to $48,374 AUD

A
Cheapest Retailer
-
$26,458 AUD
HK$145,200 HKD
A
Retailer 2
-
$27,149 AUD
₹1,816,230 INR
View
B+
Retailer 3
-
$29,349 AUD
View
B+
Retailer 4
-
$31,497 AUD
$22,125 USD
View
B+
Retailer 5
-
$32,766 AUD
$23,016 USD
View
Final sale: no returns
B+
Retailer 6
-
$33,305 AUD
$23,395 USD
View
B+
Retailer 7
-
$35,636 AUD
£19,711 GBP
View
B
Retailer 8
-
$35,771 AUD
$25,127 USD
View
B+
Retailer 9
-
$35,899 AUD
$25,217 USD
View
B
Retailer 10
-
$37,039 AUD
$26,018 USD
View
B
Retailer 11
-
$38,464 AUD
$27,019 USD
View
B
Retailer 12
-
$43,881 AUD
$30,824 USD
View
Most Expensive
B
MOH London
ECDD29573 · Nov 1
$48,374 AUD
£26,756 GBP
View
12 more retailers have this diamond
Prices start from $26,458 AUDSave up to $21,916 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 Radiant
$26,458 AUD