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Cushion|Natural|GIA

1.51ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 2554124696

Certificate GIA 2554124696

Diamond specifications and retailer prices

From $4,638 AUD
As of November 6, 2026
Save $1,575 AUD (25%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $6,213 AUD at GemTrove · As of November 6, 2026
View at GemTrove

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2554124696. Listed at 5 retailers as of November 6, 2026, with prices from $4,638 to $6,213, a $1,575 spread on the same certified stone. GemTrove lists it at $6,213. 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

1.51
Carat
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 2554124696
Dimensions6.27 × 6.24 × 4.32 mm
L/W Ratio1.00
Top View
6.27 mm6.24 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 2554124696
Side View
Table 61.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 69.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: $4,638 AUD|Low: $4,638 AUD|High: $5,817 AUD|Avg: $5,167 AUD|-1.6%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 1$4,638 AUD
Retailer 3$4,931 AUD
Retailer 5$5,101 AUD
Retailer 2$5,255 AUD
Retailer 4$5,317 AUD

45 data points across 5 retailers

5 retailers$4,638 AUD to $6,213 AUD

A
Cheapest Retailer
-
$4,638 AUD
Retailer 2
-
$4,931 AUD
View
Price last confirmed 21 days ago
Retailer 3
-
$5,255 AUD
View
Price last confirmed 20 days ago
Retailer 4
-
$5,317 AUD
View
Price last confirmed 21 days ago
Most Expensive
A
GemTrove
GT-N-00967759-98 · Nov 6
$6,213 AUD
View
4 more retailers have this diamond
Prices start from $4,638 AUDSave up to $1,575 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
1.51ct Cushion
$4,638 AUD