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Radiant|Natural|GIA

2.51ct K SI2 Radiant Natural Diamond

EX • K/SI2 • GIA 6502948012

Certificate GIA 6502948012

Diamond specifications and retailer prices

From $19,708 AUD
As of November 7, 2026
Save $9,053 AUD (31%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $28,760 AUD at MOH London · As of November 4, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6502948012. Listed at 3 retailers as of November 4, 2026, with prices from $19,708 to $28,760, a $9,053 spread on the same certified stone. MOH London lists it at $28,760. 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
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6502948012
Dimensions9.20 × 7.02 × 4.43 mm
L/W Ratio1.31
Top View
9.20 mm7.02 mm2.51 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6502948012
Side View
Table 69.0%CrownGirdle: THN-MEDPavilionCulet: NoneDepth 63.1%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 7
Current: $28,760 AUD|Low: $19,708 AUD|High: $29,186 AUD|Avg: $24,098 AUD|-0.3%
MOH London
Retailer 2
Retailer 3
November 7, 2026
Retailer 2$19,708 AUD
Retailer 3$23,134 AUD
MOH London$28,760 AUD

43 data points across 3 retailers

3 retailers$19,708 AUD to $28,760 AUD

B+
Cheapest Retailer
-
$19,708 AUD
B+
Retailer 2
-
$23,134 AUD
View
Most Expensive
B
MOH London
8F193BED9 · Nov 4
$28,760 AUD
£15,560 GBP
View
2 more retailers have this diamond
Prices start from $19,708 AUDSave up to $9,053 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
$19,708 AUD