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Cushion|Natural|GIA

1.51ct F SI2 Cushion Natural Diamond

VG • F/SI2 • GIA 5553205520

Certificate GIA 5553205520

Diamond specifications and retailer prices

From $4,465 AUD
$3,129 USD
As of November 1, 2026
Save $5,480 AUD (55%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $9,945 AUD at MOH London · As of November 2, 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 F colour (colourless) and SI2 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5553205520. Listed at 18 retailers as of November 1, 2026, with prices from $4,465 to $9,945, a $5,480 spread on the same certified stone. MOH London lists it at $9,945. 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

1.51
Carat
F
Colour
SI2
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.3°
Pavilion angle36.1°
OriginNatural
Grading LabGIA
CertificateGIA 5553205520
Dimensions6.59 × 6.46 × 4.37 mm
L/W Ratio1.02
Top View
6.59 mm6.46 mm1.51 ctF / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5553205520
Side View
Table 59.0%Crown 37.3°Girdle: THN-STKPavilion 36.1°Culet: NoneDepth 67.6%

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: $9,945 AUD|Low: $4,465 AUD|High: $10,039 AUD|Avg: $6,139 AUD|-0.7%
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
Retailer 15
Retailer 16
Retailer 17
November 3, 2026
Retailer 9$4,465 AUD
Retailer 13$4,730 AUD
Retailer 12$4,944 AUD
Retailer 15$4,977 AUD
Retailer 6$5,110 AUD
Retailer 8$5,222 AUD
Retailer 4$5,658 AUD
Retailer 3$5,661 AUD
Retailer 10$5,884 AUD
Retailer 14$5,993 AUD
Retailer 17$5,993 AUD
Retailer 16$6,193 AUD
Retailer 2$6,388 AUD
Retailer 11$6,657 AUD
Retailer 5$7,065 AUD
Retailer 7$7,423 AUD
MOH London$9,945 AUD

28 data points across 17 retailers

18 retailers$4,465 AUD to $9,945 AUD

A
Cheapest Retailer
-
$4,465 AUD
$3,129 USD
A
Retailer 2
-
$4,730 AUD
HK$25,900 HKD
View
A
Retailer 3
-
$4,944 AUD
$3,465 USD
View
A
Retailer 4
-
$4,977 AUD
$3,488 USD
View
A
Retailer 5
-
$5,110 AUD
$3,581 USD
View
A
Retailer 6
-
$5,179 AUD
View
A
Retailer 7
-
$5,222 AUD
$3,660 USD
View
Final sale: no returns
A
Retailer 8
-
$5,658 AUD
$3,965 USD
View
A
Retailer 9
-
$5,661 AUD
$3,967 USD
View
A
Retailer 10
-
$5,884 AUD
£3,247 GBP
View
A
Retailer 11
-
$5,993 AUD
$4,200 USD
View
A
Retailer 12
-
$5,993 AUD
$4,200 USD
View
A
Retailer 13
-
$6,193 AUD
$4,340 USD
View
A
Retailer 14
-
$6,388 AUD
£3,525 GBP
View
A
Retailer 15
-
$6,657 AUD
€4,443 EUR
View
Retailer 16
-
$7,065 AUD
$4,951 USD
View
Price last confirmed 10 days ago
B+
Retailer 17
-
$7,423 AUD
$5,202 USD
View
Most Expensive
B+
MOH London
002CD75B5 · Nov 2
$9,945 AUD
£5,488 GBP
View
17 more retailers have this diamond
Prices start from $4,465 AUDSave up to $5,480 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
$4,465 AUD