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Cushion|Natural|GIA

1.51ct I SI2 Cushion Natural Diamond

EX • I/SI2 • GIA 1553333834

Certificate GIA 1553333834

Diamond specifications and retailer prices

From $4,402 AUD
HK$24,100 HKD
As of November 1, 2026
Save $5,339 AUD (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $9,740 AUD at MOH London · As of November 1, 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1553333834. Listed at 16 retailers as of November 1, 2026, with prices from $4,402 to $9,740, a $5,339 spread on the same certified stone. MOH London lists it at $9,740. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1553333834
Dimensions7.30 × 5.70 × 3.98 mm
L/W Ratio1.28
Girdle conditionVery Thick to Extremely Thick
Top View
7.30 mm5.70 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553333834
Side View
Table 67.0%CrownGirdle: VTK-XTKPavilionCulet: NoneDepth 69.8%

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 1
Current: $9,740 AUD|Low: $4,365 AUD|High: $10,025 AUD|Avg: $5,910 AUD|-2.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 3, 2026
Retailer 10$4,402 AUD
Retailer 4$4,566 AUD
Retailer 5$4,685 AUD
Retailer 13$4,789 AUD
Retailer 3$4,870 AUD
Retailer 14$5,000 AUD
Retailer 12$5,277 AUD
Retailer 6$5,581 AUD
Retailer 8$5,681 AUD
Retailer 2$5,958 AUD
Retailer 9$6,589 AUD
Retailer 11$6,591 AUD
Retailer 7$6,621 AUD
MOH London$9,740 AUD

35 data points across 14 retailers

16 retailers$4,402 AUD to $9,740 AUD

A
Cheapest Retailer
-
$4,402 AUD
HK$24,100 HKD
A
Retailer 2
-
$4,566 AUD
$3,200 USD
View
A
Retailer 3
-
$4,685 AUD
$3,283 USD
View
A
Retailer 4
-
$4,789 AUD
$3,356 USD
View
A
Retailer 5
-
$4,870 AUD
$3,413 USD
View
Final sale: no returns
A
Retailer 6
-
$5,000 AUD
$3,504 USD
View
A
Retailer 7
-
$5,277 AUD
$3,698 USD
View
A
Retailer 8
-
$5,581 AUD
$3,912 USD
View
A
Retailer 9
-
$5,681 AUD
£3,135 GBP
View
A
Retailer 10
-
$5,932 AUD
$4,157 USD
View
A
Retailer 11
-
$5,958 AUD
£3,288 GBP
View
B+
Retailer 12
-
$6,589 AUD
€4,398 EUR
View
B+
Retailer 13
-
$6,621 AUD
$4,640 USD
View
B+
Retailer 14
-
$7,306 AUD
$5,120 USD
View
B+
Retailer 15
-
$7,548 AUD
$5,290 USD
View
Most Expensive
B
MOH London
711C6122D · Nov 1
$9,740 AUD
£5,375 GBP
View
15 more retailers have this diamond
Prices start from $4,402 AUDSave up to $5,339 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
$4,402 AUD