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Cushion|Natural|GIA

1.50ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 2557664390

Certificate GIA 2557664390

Diamond specifications and retailer prices

From $4,646 USD
HK$36,300 HKD
As of October 29, 2026
Save $5,209 USD (53%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $9,855 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2557664390. Listed at 19 retailers as of October 28, 2026, with prices from $4,646 to $9,855, a $5,209 spread on the same certified stone. Queensmith lists it at $9,855. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.50
Carat
E
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557664390
Dimensions7.39 × 5.70 × 3.89 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cavity, Cloud, Needle
Top View
7.39 mm5.70 mm1.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2557664390
Side View
Table 67.0%CrownGirdle: MED-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: Oct 29
Current: $9,855 USD|Low: $4,646 USD|High: $9,931 USD|Avg: $6,615 USD|+1.4%
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
Retailer 14
Retailer 15
October 29, 2026
Retailer 15$4,646 USD
Retailer 8$5,032 USD
Retailer 14$5,234 USD
Retailer 13$5,349 USD
Retailer 6$5,526 USD
Retailer 4$5,772 USD
Retailer 9$5,885 USD
Retailer 2$5,981 USD
Retailer 7$6,223 USD
Retailer 5$6,411 USD
Retailer 3$6,537 USD
Retailer 11$6,822 USD
Retailer 12$7,615 USD
Retailer 10$9,262 USD
Queensmith$9,855 USD

22 data points across 15 retailers

19 retailers$4,646 USD to $9,855 USD

A
Cheapest Retailer
-
$4,646 USD
HK$36,300 HKD
A
Retailer 2
-
$5,032 USD
₹479,215 INR
View
A
Retailer 3
-
$5,234 USD
View
A
Retailer 4
-
$5,349 USD
SGD 7,229 SGD
View
A
Retailer 5
-
$5,526 USD
SGD 7,468 SGD
View
A
Retailer 6
-
$5,746 USD
View
A
Retailer 7
-
$5,750 USD
View
A
Retailer 8
-
$5,772 USD
View
Final sale: no returns
A
Retailer 9
-
$5,885 USD
£4,634 GBP
View
A
Retailer 10
-
$5,981 USD
£4,709 GBP
View
B+
Retailer 11
-
$6,223 USD
A$9,573 AUD
View
Price last confirmed 18 days ago
B+
Retailer 12
-
$6,295 USD
View
Price last confirmed 13 days ago
B+
Retailer 13
-
$6,382 USD
A$9,818 AUD
View
B+
Retailer 14
-
$6,411 USD
View
B+
Retailer 15
-
$6,537 USD
View
B+
Retailer 16
-
$6,822 USD
€6,497 EUR
View
B+
Retailer 17
-
$7,615 USD
ZAR 123,020 ZAR
View
B+
Retailer 18
-
$9,262 USD
£7,293 GBP
View
Most Expensive
B
Queensmith
2557664390 · Oct 28
$9,855 USD
£7,760 GBP
View
18 more retailers have this diamond
Prices start from $4,646 USDSave up to $5,209 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
$4,646 USD