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Cushion|Natural|GIA

1.50ct D SI2 Cushion Natural Diamond

GD • D/SI2 • GIA 2557428908

Certificate GIA 2557428908

Diamond specifications and retailer prices

From $6,615 AUD
HK$36,300 HKD
As of October 30, 2026
Save $7,415 AUD (53%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $14,030 AUD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.5ct natural cushion diamond

This 1.5ct natural cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2557428908. Listed at 14 retailers as of October 28, 2026, with prices from $6,615 to $14,030, a $7,415 spread on the same certified stone. Queensmith lists it at $14,030. 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
D
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557428908
Dimensions7.90 × 6.07 × 3.73 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Cloud, Crystal, Cavity, Indented Natural, Needle, Natural
Top View
7.90 mm6.07 mm1.50 ctD / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557428908
Side View
Table 69.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 61.4%

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: Oct 30
Current: $14,030 AUD|Low: $6,615 AUD|High: $14,129 AUD|Avg: $9,536 AUD|+1.5%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 31, 2026
Retailer 9$6,615 AUD
Retailer 6$7,135 AUD
Retailer 8$7,614 AUD
Retailer 3$7,860 AUD
Retailer 10$8,216 AUD
Retailer 5$8,540 AUD
Retailer 11$8,784 AUD
Retailer 4$8,953 AUD
Retailer 12$9,126 AUD
Retailer 2$9,728 AUD
Retailer 7$13,186 AUD
Queensmith$14,030 AUD

32 data points across 12 retailers

14 retailers$6,615 AUD to $14,030 AUD

A
Cheapest Retailer
-
$6,615 AUD
HK$36,300 HKD
A
Retailer 2
-
$7,135 AUD
₹477,326 INR
View
B+
Retailer 3
-
$7,614 AUD
SGD 7,228 SGD
View
B+
Retailer 4
-
$7,860 AUD
SGD 7,461 SGD
View
B+
Retailer 5
-
$8,173 AUD
$5,741 USD
View
B+
Retailer 6
-
$8,216 AUD
$5,771 USD
View
Final sale: no returns
B+
Retailer 7
-
$8,540 AUD
£4,723 GBP
View
B+
Retailer 8
-
$8,784 AUD
$6,170 USD
View
Retailer 9
-
$8,953 AUD
$6,289 USD
View
Price last confirmed 15 days ago
B+
Retailer 10
-
$9,126 AUD
$6,410 USD
View
B+
Retailer 11
-
$9,168 AUD
View
B+
Retailer 12
-
$9,728 AUD
€6,508 EUR
View
B
Retailer 13
-
$13,186 AUD
£7,293 GBP
View
Most Expensive
B
Queensmith
2557428908 · Oct 28
$14,030 AUD
£7,760 GBP
View
13 more retailers have this diamond
Prices start from $6,615 AUDSave up to $7,415 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
$6,615 AUD