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Cushion|Natural|GIA

1.50ct E SI1 Cushion Natural Diamond

ID • E/SI1 • GIA 2557438429

Certificate GIA 2557438429

Diamond specifications and retailer prices

From $6,185 SGD
HK$37,800 HKD
As of October 29, 2026
Save $6,673 SGD (52%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $12,859 SGD 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 $6,185 to $12,859, a $6,673 spread on the same certified stone. Queensmith lists it at $12,859. 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
Colour
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: $12,859 SGD|Low: $6,185 SGD|High: $12,964 SGD|Avg: $8,668 SGD|+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 30, 2026
Retailer 3$6,185 SGD
Retailer 9$6,682 SGD
Retailer 10$6,953 SGD
Retailer 4$7,249 SGD
Retailer 7$7,347 SGD
Retailer 13$7,638 SGD
Retailer 16$7,676 SGD
Retailer 15$7,677 SGD
Retailer 2$7,976 SGD
Retailer 8$8,165 SGD
Retailer 5$8,182 SGD
Retailer 6$8,519 SGD
Retailer 12$9,071 SGD
Retailer 14$10,127 SGD
Retailer 11$12,318 SGD
Queensmith$12,859 SGD

28 data points across 16 retailers

19 retailers$6,185 SGD to $12,859 SGD

A
Cheapest Retailer
-
$6,185 SGD
HK$37,800 HKD
A
Retailer 2
-
$6,682 SGD
₹497,815 INR
View
A
Retailer 3
-
$6,953 SGD
$5,439 USD
View
Retailer 4
-
$7,159 SGD
View
Price last confirmed 16 days ago
A
Retailer 5
-
$7,249 SGD
$5,670 USD
View
A
Retailer 6
-
$7,347 SGD
View
A
Retailer 7
-
$7,638 SGD
$5,975 USD
View
A
Retailer 8
-
$7,638 SGD
$5,975 USD
View
A
Retailer 9
-
$7,676 SGD
$6,004 USD
View
Final sale: no returns
A
Retailer 10
-
$7,677 SGD
$6,005 USD
View
A
Retailer 11
-
$7,976 SGD
£4,913 GBP
View
B+
Retailer 12
-
$8,109 SGD
A$9,758 AUD
View
Retailer 13
-
$8,165 SGD
A$9,825 AUD
View
Price last confirmed 21 days ago
B+
Retailer 14
-
$8,182 SGD
$6,400 USD
View
B+
Retailer 15
-
$8,519 SGD
$6,663 USD
View
B+
Retailer 16
-
$9,071 SGD
€6,758 EUR
View
B+
Retailer 17
-
$10,127 SGD
ZAR 127,969 ZAR
View
B+
Retailer 18
-
$12,318 SGD
£7,587 GBP
View
Most Expensive
B
Queensmith
2557438429 · Oct 28
$12,859 SGD
£7,920 GBP
View
18 more retailers have this diamond
Prices start from $6,185 SGDSave up to $6,673 SGD

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
$6,185 SGD