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Cushion|Natural|GIA

2.51ct I SI2 Cushion Natural Diamond

ID • I/SI2 • GIA 6565458704

Certificate GIA 6565458704

Diamond specifications and retailer prices

From $24,564 AUD
$17,215 USD
As of November 1, 2026
Save $18,266 AUD (43%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $42,830 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 2.51ct natural cushion diamond

This 2.51ct natural cushion sits in the two to three carat band, graded I 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 6565458704. Listed at 9 retailers as of November 1, 2026, with prices from $24,564 to $42,830, a $18,266 spread on the same certified stone. MOH London lists it at $42,830. 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
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6565458704
Dimensions9.09 × 7.02 × 4.90 mm
L/W Ratio1.29
Top View
9.09 mm7.02 mm2.51 ctI / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6565458704
Side View
Table 62.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 69.9%

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: $42,830 AUD|Low: $23,473 AUD|High: $43,061 AUD|Avg: $29,443 AUD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 9$23,473 AUD
Retailer 4$24,564 AUD
Retailer 5$25,171 AUD
Retailer 7$25,754 AUD
Retailer 3$28,245 AUD
Retailer 6$30,868 AUD
Retailer 8$31,938 AUD
Retailer 2$33,266 AUD
MOH London$42,830 AUD

19 data points across 9 retailers

9 retailers$24,564 AUD to $42,830 AUD

Retailer 1
-
$23,473 AUD
$16,450 USD
Price last confirmed 19 days ago
A
Retailer 2
-
$24,564 AUD
$17,215 USD
View
A
Retailer 3
-
$25,171 AUD
$17,640 USD
View
B+
Retailer 4
-
$25,754 AUD
CA$25,068 CAD
View
B+
Retailer 5
-
$28,245 AUD
£15,586 GBP
View
B+
Retailer 6
-
$30,868 AUD
$21,633 USD
View
B
Retailer 7
-
$31,938 AUD
$22,383 USD
View
B
Retailer 8
-
$33,266 AUD
€22,203 EUR
View
Most Expensive
B
MOH London
A53E81CB6 · Nov 1
$42,830 AUD
£23,635 GBP
View
8 more retailers have this diamond
Prices start from $24,564 AUDSave up to $18,266 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 Cushion
$24,564 AUD