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Cushion|Natural|GIA

1.50ct F SI1 Cushion Natural Diamond

VG • F/SI1 • GIA 6551393833

Certificate GIA 6551393833

Diamond specifications and retailer prices

From $6,184 AUD
As of November 6, 2026
Save $6,997 AUD (53%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $13,181 AUD at MOH London · As of November 7, 2026
View at MOH London

About this 1.5ct natural cushion diamond

This 1.5ct natural cushion sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 6551393833. Listed at 22 retailers as of November 6, 2026, with prices from $6,184 to $13,181, a $6,997 spread on the same certified stone. MOH London lists it at $13,181. 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

1.50
Carat
F
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551393833
Dimensions7.55 × 6.01 × 4.13 mm
L/W Ratio1.26
Girdle conditionFaceted
Top View
7.55 mm6.01 mm1.50 ctF / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551393833
Side View
Table 67.0%CrownGirdle: MED-ETKPavilionCulet: NoneDepth 68.7%

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: $13,181 AUD|Low: $6,091 AUD|High: $13,313 AUD|Avg: $8,227 AUD|+4.0%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
November 7, 2026
Retailer 9$6,184 AUD
Retailer 12$6,369 AUD
Retailer 3$6,621 AUD
Retailer 11$6,958 AUD
Retailer 20$6,970 AUD
Retailer 19$7,073 AUD
Retailer 5$7,081 AUD
Retailer 14$7,082 AUD
Retailer 7$7,350 AUD
Retailer 10$7,350 AUD
Retailer 6$7,364 AUD
Retailer 16$7,702 AUD
Retailer 2$7,792 AUD
Retailer 8$7,979 AUD
Retailer 15$8,689 AUD
Retailer 13$8,849 AUD
Retailer 17$9,363 AUD
Retailer 18$10,151 AUD
Retailer 4$12,968 AUD
MOH London$13,181 AUD

19 data points across 20 retailers

22 retailers$6,184 AUD to $13,181 AUD

A
Cheapest Retailer
-
$6,184 AUD
A
Retailer 2
-
$6,369 AUD
View
A
Retailer 3
-
$6,621 AUD
View
A
Retailer 4
-
$6,958 AUD
View
Final sale: no returns
A
Retailer 5
-
$6,970 AUD
View
A
Retailer 6
-
$7,073 AUD
View
A
Retailer 7
-
$7,081 AUD
View
A
Retailer 8
-
$7,082 AUD
View
A
Retailer 9
-
$7,350 AUD
View
A
Retailer 10
-
$7,350 AUD
View
A
Retailer 11
-
$7,364 AUD
View
A
Retailer 12
-
$7,702 AUD
View
B+
Retailer 13
-
$7,792 AUD
View
B+
Retailer 14
-
$7,979 AUD
View
B+
Retailer 15
-
$8,606 AUD
View
B+
Retailer 16
-
$8,689 AUD
View
Retailer 17
-
$8,804 AUD
View
Price last confirmed 34 days ago
B+
Retailer 18
-
$8,849 AUD
View
B+
Retailer 19
-
$9,363 AUD
View
B+
Retailer 20
-
$10,151 AUD
View
B
Retailer 21
-
$12,968 AUD
View
Most Expensive
B
MOH London
0B971148A · Nov 7
$13,181 AUD
£7,131 GBP
View
21 more retailers have this diamond
Prices start from $6,184 AUDSave up to $6,997 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
1.50ct Cushion
$6,184 AUD