CaratHunter
Plans
Cushion|Natural|GIA

1.50ct E SI1 Cushion Natural Diamond

ID • E/SI1 • GIA 2557438429

Certificate GIA 2557438429

Diamond specifications and retailer prices

From $4,838 USD
HK$37,800 HKD
As of October 29, 2026
Save $5,220 USD (52%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $10,058 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 2557438429. Listed at 19 retailers as of October 28, 2026, with prices from $4,838 to $10,058, a $5,220 spread on the same certified stone. Queensmith lists it at $10,058. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557438429
Dimensions7.69 × 5.74 × 3.86 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Needle
Top View
7.69 mm5.74 mm1.50 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557438429
Side View
Table 63.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 67.3%

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: $10,058 USD|Low: $4,838 USD|High: $10,141 USD|Avg: $6,732 USD|+1.8%
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
Retailer 16
October 29, 2026
Retailer 3$4,838 USD
Retailer 11$5,222 USD
Retailer 2$5,439 USD
Retailer 4$5,670 USD
Retailer 7$5,747 USD
Retailer 13$5,975 USD
Retailer 16$6,004 USD
Retailer 15$6,005 USD
Retailer 12$6,211 USD
Retailer 8$6,387 USD
Retailer 5$6,400 USD
Retailer 6$6,663 USD
Retailer 10$7,096 USD
Retailer 14$7,921 USD
Retailer 9$9,635 USD
Queensmith$10,058 USD

28 data points across 16 retailers

19 retailers$4,838 USD to $10,058 USD

A
Cheapest Retailer
-
$4,838 USD
HK$37,800 HKD
A
Retailer 2
-
$5,222 USD
₹497,350 INR
View
A
Retailer 3
-
$5,439 USD
View
A
Retailer 4
-
$5,600 USD
SGD 7,568 SGD
View
Price last confirmed 15 days ago
A
Retailer 5
-
$5,670 USD
View
A
Retailer 6
-
$5,747 USD
SGD 7,766 SGD
View
A
Retailer 7
-
$5,975 USD
View
A
Retailer 8
-
$5,975 USD
View
A
Retailer 9
-
$6,004 USD
View
Final sale: no returns
A
Retailer 10
-
$6,005 USD
View
A
Retailer 11
-
$6,211 USD
£4,891 GBP
View
B+
Retailer 12
-
$6,343 USD
A$9,758 AUD
View
A
Retailer 13
-
$6,387 USD
A$9,825 AUD
View
Price last confirmed 19 days ago
B+
Retailer 14
-
$6,400 USD
View
B+
Retailer 15
-
$6,663 USD
View
B+
Retailer 16
-
$7,096 USD
€6,758 EUR
View
B+
Retailer 17
-
$7,921 USD
ZAR 127,969 ZAR
View
B+
Retailer 18
-
$9,635 USD
£7,587 GBP
View
Most Expensive
B
Queensmith
2557438429 · Oct 28
$10,058 USD
£7,920 GBP
View
18 more retailers have this diamond
Prices start from $4,838 USDSave up to $5,220 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
$4,838 USD