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Cushion|Natural|GIA

1.50ct K SI2 Cushion Natural Diamond

GD • K/SI2 • GIA 6552178766

Certificate GIA 6552178766

Diamond specifications and retailer prices

From $2,623 AUD
As of November 6, 2026
Save $3,423 AUD (57%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $6,046 AUD at MOH London · As of November 4, 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 K colour (faint-tinted) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6552178766. Listed at 11 retailers as of November 4, 2026, with prices from $2,623 to $6,046, a $3,423 spread on the same certified stone. MOH London lists it at $6,046. 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
K
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6552178766
Dimensions7.60 × 5.97 × 4.16 mm
L/W Ratio1.27
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Knot, Cavity, Needle
Top View
7.60 mm5.97 mm1.50 ctK / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6552178766
Side View
Table 64.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 69.7%

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: $6,046 AUD|Low: $2,623 AUD|High: $6,096 AUD|Avg: $3,908 AUD|-0.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2$2,623 AUD
Retailer 3$3,448 AUD
Retailer 5$3,660 AUD
Retailer 4$4,296 AUD
MOH London$6,046 AUD

29 data points across 5 retailers

11 retailers$2,623 AUD to $6,046 AUD

A
Cheapest Retailer
-
$2,623 AUD
B+
Retailer 2
-
$3,125 AUD
View
B+
Retailer 3
-
$3,411 AUD
View
B+
Retailer 4
-
$3,448 AUD
View
Retailer 5
-
$3,461 AUD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
$3,660 AUD
View
B+
Retailer 7
-
$3,730 AUD
View
B+
Retailer 8
-
$3,756 AUD
View
Retailer 9
-
$4,031 AUD
View
Price last confirmed 39 days ago
B+
Retailer 10
-
$4,296 AUD
View
Most Expensive
B
MOH London
537817708 · Nov 4
$6,046 AUD
£3,271 GBP
View
10 more retailers have this diamond
Prices start from $2,623 AUDSave up to $3,423 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
$2,623 AUD