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Cushion|Natural|GIA

1.50ct D SI2 Cushion Natural Diamond

GD • D/SI2 • GIA 6551664558

Certificate GIA 6551664558

Diamond specifications and retailer prices

From $4,019 USD
HK$31,400 HKD
As of November 1, 2026
Save $5,112 USD (56%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $9,131 USD 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 6551664558. Listed at 15 retailers as of October 28, 2026, with prices from $4,019 to $9,131, a $5,112 spread on the same certified stone. Queensmith lists it at $9,131. 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
Color
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6551664558
Dimensions7.73 × 5.95 × 4.07 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Needle, Indented Natural
Top View
7.73 mm5.95 mm1.50 ctD / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6551664558
Side View
Table 64.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.4%

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: Nov 1
Current: $9,131 USD|Low: $3,994 USD|High: $9,195 USD|Avg: $5,791 USD|+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
Retailer 13
November 1, 2026
Retailer 9$4,019 USD
Retailer 2$4,308 USD
Retailer 5$4,742 USD
Retailer 3$4,956 USD
Retailer 6$5,059 USD
Retailer 12$5,119 USD
Retailer 8$5,195 USD
Retailer 11$5,369 USD
Retailer 4$5,522 USD
Retailer 13$5,650 USD
Retailer 10$6,076 USD
Retailer 7$8,551 USD
Queensmith$9,131 USD

25 data points across 13 retailers

15 retailers$4,019 USD to $9,131 USD

A
Cheapest Retailer
-
$4,019 USD
HK$31,400 HKD
A
Retailer 2
-
$4,308 USD
₹410,328 INR
View
A
Retailer 3
-
$4,742 USD
SGD 6,408 SGD
View
B+
Retailer 4
-
$4,930 USD
View
B+
Retailer 5
-
$4,956 USD
View
Final sale: no returns
A
Retailer 6
-
$5,059 USD
£3,984 GBP
View
B+
Retailer 7
-
$5,119 USD
SGD 6,918 SGD
View
A
Retailer 8
-
$5,195 USD
£4,091 GBP
View
B+
Retailer 9
-
$5,369 USD
View
B+
Retailer 10
-
$5,522 USD
View
B+
Retailer 11
-
$5,650 USD
View
B+
Retailer 12
-
$5,790 USD
A$8,908 AUD
View
B+
Retailer 13
-
$6,076 USD
€5,787 EUR
View
B
Retailer 14
-
$8,551 USD
£6,733 GBP
View
Most Expensive
B
Queensmith
6551664558 · Oct 28
$9,131 USD
£7,190 GBP
View
14 more retailers have this diamond
Prices start from $4,019 USDSave up to $5,112 USD

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
$4,019 USD