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Cushion|Natural|GIA

1.51ct H SI2 Cushion Natural Diamond

EX • H/SI2 • GIA 6555010552

Certificate GIA 6555010552

Diamond specifications and retailer prices

From $4,009 AUD
HK$22,000 HKD
As of November 2, 2026
Save $2,030 AUD (34%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $8,892 AUD at MOH London · As of October 21, 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 H 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 6555010552. Listed at 14 retailers as of November 2, 2026, with a 51% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555010552
Dimensions7.62 × 6.09 × 4.17 mm
L/W Ratio1.25
Top View
7.62 mm6.09 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555010552
Side View
Table 68.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 68.5%

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 2
Current: $8,892 AUD|Low: $3,936 AUD|High: $9,360 AUD|Avg: $5,465 AUD|-5.0%
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 2, 2026
Retailer 2$4,009 AUD
Retailer 14$4,012 AUD
Retailer 12$4,296 AUD
Retailer 10$4,314 AUD
Retailer 3$4,414 AUD
Retailer 5$4,704 AUD
Retailer 9$4,845 AUD
Retailer 13$4,869 AUD
Retailer 7$4,999 AUD
Retailer 11$5,393 AUD
Retailer 6$5,505 AUD
Retailer 8$6,039 AUD
Retailer 4$8,546 AUD
MOH London$8,892 AUD

26 data points across 14 retailers

14 retailers$4,009 AUD to $6,039 AUD

A
Cheapest Retailer
-
$4,009 AUD
HK$22,000 HKD
A
Retailer 2
-
$4,012 AUD
$2,818 USD
View
A
Retailer 3
-
$4,296 AUD
$3,018 USD
View
A
Retailer 4
-
$4,314 AUD
$3,030 USD
View
Final sale: no returns
A
Retailer 5
-
$4,414 AUD
$3,101 USD
View
A
Retailer 6
-
$4,704 AUD
$3,304 USD
View
A
Retailer 7
-
$4,845 AUD
$3,404 USD
View
A
Retailer 8
-
$4,869 AUD
$3,420 USD
View
A
Retailer 9
-
$4,999 AUD
£2,765 GBP
View
A
Retailer 10
-
$5,393 AUD
£2,983 GBP
View
A
Retailer 11
-
$5,985 AUD
View
A
Retailer 12
-
$6,039 AUD
€4,040 EUR
View
Retailer 13
-
$8,546 AUD
$6,003 USD
View
Price last confirmed 9 days ago
Most Expensive
MOH London
01783FD08 · Oct 21
$8,892 AUD
£4,918 GBP
View
Price last confirmed 12 days ago
13 more retailers have this diamond
Prices start from $4,009 AUDSave up to $2,030 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
$4,009 AUD