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Cushion|Natural|GIA

2.51ct I SI2 Cushion Natural Diamond

VG • I/SI2 • GIA 1563405840

Certificate GIA 1563405840

Diamond specifications and retailer prices

From $17,197 AUD
$12,080 USD
As of November 1, 2026
Save $9,534 AUD (36%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $26,731 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 1563405840. Listed at 7 retailers as of November 1, 2026, with prices from $17,197 to $26,731, a $9,534 spread on the same certified stone. MOH London lists it at $26,731. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

2.51
Carat
I
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.86°
OriginNatural
Grading LabGIA
CertificateGIA 1563405840
Dimensions7.81 × 7.67 × 5.23 mm
L/W Ratio1.02
Culet sizeNone
Key to symbols
Feather, Cloud
Top View
7.81 mm7.67 mm2.51 ctI / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1563405840
Side View
Table 61.0%Crown 33.86°Girdle: STK-VTKPavilionCulet: NDepth 68.2%

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: $26,731 AUD|Low: $16,508 AUD|High: $29,143 AUD|Avg: $20,222 AUD|-3.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 2, 2026
Retailer 7$17,197 AUD
Retailer 5$17,334 AUD
Retailer 6$17,539 AUD
Retailer 3$18,258 AUD
Retailer 4$20,762 AUD
Retailer 2$21,561 AUD
MOH London$26,731 AUD

35 data points across 7 retailers

7 retailers$17,197 AUD to $26,731 AUD

A
Cheapest Retailer
-
$17,197 AUD
$12,080 USD
A
Retailer 2
-
$17,334 AUD
$12,176 USD
View
A
Retailer 3
-
$17,539 AUD
$12,320 USD
View
A
Retailer 4
-
$18,258 AUD
£10,098 GBP
View
A
Retailer 5
-
$20,762 AUD
$14,584 USD
View
A
Retailer 6
-
$21,561 AUD
€14,424 EUR
View
Most Expensive
B+
MOH London
82E2214ED · Nov 1
$26,731 AUD
£14,785 GBP
View
6 more retailers have this diamond
Prices start from $17,197 AUDSave up to $9,534 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
$17,197 AUD