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Cushion|Natural|GIA

1.50ct D SI2 Cushion Natural Diamond

GD • D/SI2 • GIA 6551490082

Certificate GIA 6551490082

Diamond specifications and retailer prices

From $5,722 AUD
HK$31,400 HKD
As of November 1, 2026
Save $7,278 AUD (56%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $12,999 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 6551490082. Listed at 14 retailers as of October 28, 2026, with prices from $5,722 to $12,999, a $7,278 spread on the same certified stone. Queensmith lists it at $12,999. 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 6551490082
Dimensions8.16 × 5.42 × 3.83 mm
L/W Ratio1.51
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Indented Natural, Cavity, Needle
Top View
8.16 mm5.42 mm1.50 ctD / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551490082
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 70.6%

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: $12,999 AUD|Low: $5,685 AUD|High: $13,090 AUD|Avg: $8,478 AUD|+1.7%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 1, 2026
Retailer 7$5,722 AUD
Retailer 2$6,133 AUD
Retailer 3$6,751 AUD
Retailer 10$7,055 AUD
Retailer 9$7,288 AUD
Retailer 6$7,396 AUD
Retailer 11$7,659 AUD
Retailer 4$7,695 AUD
Retailer 12$7,862 AUD
Retailer 8$8,650 AUD
Retailer 5$12,173 AUD
Queensmith$12,999 AUD

33 data points across 12 retailers

14 retailers$5,722 AUD to $12,999 AUD

A
Cheapest Retailer
-
$5,722 AUD
HK$31,400 HKD
A
Retailer 2
-
$6,133 AUD
₹410,328 INR
View
A
Retailer 3
-
$6,751 AUD
SGD 6,408 SGD
View
B+
Retailer 4
-
$7,018 AUD
$4,930 USD
View
B+
Retailer 5
-
$7,055 AUD
$4,956 USD
View
Final sale: no returns
B+
Retailer 6
-
$7,288 AUD
SGD 6,918 SGD
View
A
Retailer 7
-
$7,396 AUD
£4,091 GBP
View
B+
Retailer 8
-
$7,659 AUD
$5,380 USD
View
Retailer 9
-
$7,695 AUD
$5,405 USD
View
Price last confirmed 16 days ago
B+
Retailer 10
-
$7,808 AUD
View
B+
Retailer 11
-
$7,862 AUD
$5,522 USD
View
B+
Retailer 12
-
$8,650 AUD
€5,787 EUR
View
B
Retailer 13
-
$12,173 AUD
£6,733 GBP
View
Most Expensive
B
Queensmith
6551490082 · Oct 28
$12,999 AUD
£7,190 GBP
View
13 more retailers have this diamond
Prices start from $5,722 AUDSave up to $7,278 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
$5,722 AUD