CaratHunter
Plans
Cushion|Natural|GIA

1.50ct K SI1 Cushion Natural Diamond

GD • K/SI1 • GIA 5231995738

Certificate GIA 5231995738

Diamond specifications and retailer prices

From $3,129 AUD
As of November 6, 2026
Save $4,061 AUD (56%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $7,190 AUD at MOH London · As of November 2, 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 SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5231995738. Listed at 16 retailers as of November 2, 2026, with prices from $3,129 to $7,190, a $4,061 spread on the same certified stone. MOH London lists it at $7,190. 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
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5231995738
Dimensions7.46 × 5.72 × 4.15 mm
L/W Ratio1.30
Girdle conditionFaceted
Top View
7.46 mm5.72 mm1.50 ctK / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5231995738
Side View
Table 67.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 72.5%

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 6
Current: $7,190 AUD|Low: $3,074 AUD|High: $7,551 AUD|Avg: $4,676 AUD|-4.8%
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
Retailer 15
November 6, 2026
Retailer 4$3,129 AUD
Retailer 12$3,592 AUD
Retailer 11$3,758 AUD
Retailer 14$3,944 AUD
Retailer 2$3,949 AUD
Retailer 6$3,973 AUD
Retailer 10$4,283 AUD
Retailer 5$4,288 AUD
Retailer 7$4,321 AUD
Retailer 9$4,353 AUD
Retailer 3$4,602 AUD
Retailer 8$4,739 AUD
Retailer 13$4,969 AUD
Retailer 15$6,602 AUD
MOH London$7,190 AUD

24 data points across 15 retailers

16 retailers$3,129 AUD to $7,190 AUD

A
Cheapest Retailer
-
$3,129 AUD
B+
Retailer 2
-
$3,592 AUD
View
B+
Retailer 3
-
$3,758 AUD
View
Final sale: no returns
B+
Retailer 4
-
$3,944 AUD
View
B+
Retailer 5
-
$3,949 AUD
View
B+
Retailer 6
-
$3,973 AUD
View
B+
Retailer 7
-
$4,283 AUD
View
B+
Retailer 8
-
$4,288 AUD
View
B+
Retailer 9
-
$4,321 AUD
View
B+
Retailer 10
-
$4,353 AUD
View
B+
Retailer 11
-
$4,538 AUD
View
B+
Retailer 12
-
$4,602 AUD
View
B+
Retailer 13
-
$4,739 AUD
View
B+
Retailer 14
-
$4,969 AUD
View
B
Retailer 15
-
$6,602 AUD
View
Most Expensive
B
MOH London
0D01DAB4C · Nov 2
$7,190 AUD
£3,890 GBP
View
15 more retailers have this diamond
Prices start from $3,129 AUDSave up to $4,061 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
$3,129 AUD