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Cushion|Natural|GIA

1.51ct I SI1 Cushion Natural Diamond

ID • I/SI1 • GIA 1232947260

Certificate GIA 1232947260

Diamond specifications and retailer prices

From $4,861 AUD
As of November 6, 2026
Save $5,656 AUD (54%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $10,517 AUD at MOH London · As of November 4, 2026
View at MOH London

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two 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 1232947260. Listed at 9 retailers as of November 4, 2026, with prices from $4,861 to $10,517, a $5,656 spread on the same certified stone. MOH London lists it at $10,517. 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
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle35.31°
OriginNatural
Grading LabGIA
CertificateGIA 1232947260
Dimensions7.81 × 5.96 × 4.04 mm
L/W Ratio1.31
Key to symbols
Feather, Needle, Pinpoint, Cloud
Top View
7.81 mm5.96 mm1.51 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1232947260
Side View
Table 59.0%CrownGirdle: MED-THKPavilion 35.31°Culet: NoneDepth 67.8%

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 6
Current: $10,517 AUD|Low: $4,861 AUD|High: $11,580 AUD|Avg: $7,131 AUD|-9.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 7$4,861 AUD
Retailer 5$5,637 AUD
Retailer 8$5,921 AUD
Retailer 4$6,175 AUD
Retailer 2$6,248 AUD
Retailer 6$7,050 AUD
Retailer 3$7,564 AUD
MOH London$10,517 AUD

34 data points across 8 retailers

9 retailers$4,861 AUD to $10,517 AUD

A
Cheapest Retailer
-
$4,861 AUD
A
Retailer 2
-
$5,637 AUD
View
A
Retailer 3
-
$5,921 AUD
View
A
Retailer 4
-
$6,175 AUD
View
A
Retailer 5
-
$6,248 AUD
View
B+
Retailer 6
-
$7,050 AUD
View
B+
Retailer 7
-
$7,235 AUD
View
B+
Retailer 8
-
$7,564 AUD
View
Most Expensive
B
MOH London
8D2B6642B · Nov 4
$10,517 AUD
£5,690 GBP
View
8 more retailers have this diamond
Prices start from $4,861 AUDSave up to $5,656 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
$4,861 AUD