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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 HK$37,964 HKD
As of October 29, 2026
Save HK$40,958 HKD (52%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: HK$78,922 HKD 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 HK$37,964 to HK$78,922, a HK$40,958 spread on the same certified stone. Queensmith lists it at HK$78,922. 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: HK$78,922 HKD|Low: HK$37,964 HKD|High: HK$79,570 HKD|Avg: HK$53,199 HKD|+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 3HK$37,964 HKD
Retailer 9HK$41,014 HKD
Retailer 10HK$42,677 HKD
Retailer 4HK$44,489 HKD
Retailer 7HK$45,092 HKD
Retailer 13HK$46,882 HKD
Retailer 16HK$47,110 HKD
Retailer 15HK$47,118 HKD
Retailer 2HK$48,956 HKD
Retailer 8HK$50,111 HKD
Retailer 5HK$50,217 HKD
Retailer 6HK$52,284 HKD
Retailer 12HK$55,677 HKD
Retailer 14HK$62,154 HKD
Retailer 11HK$75,604 HKD
QueensmithHK$78,922 HKD

28 data points across 16 retailers

19 retailersHK$37,964 HKD to HK$78,922 HKD

A
Cheapest Retailer
-
HK$37,964 HKD
A
Retailer 2
-
HK$41,014 HKD
₹497,815 INR
View
A
Retailer 3
-
HK$42,677 HKD
$5,439 USD
View
Retailer 4
-
HK$43,942 HKD
SGD 7,568 SGD
View
Price last confirmed 15 days ago
A
Retailer 5
-
HK$44,489 HKD
$5,670 USD
View
A
Retailer 6
-
HK$45,092 HKD
SGD 7,766 SGD
View
A
Retailer 7
-
HK$46,882 HKD
$5,975 USD
View
A
Retailer 8
-
HK$46,882 HKD
$5,975 USD
View
A
Retailer 9
-
HK$47,110 HKD
$6,004 USD
View
Final sale: no returns
A
Retailer 10
-
HK$47,118 HKD
$6,005 USD
View
A
Retailer 11
-
HK$48,956 HKD
£4,913 GBP
View
B+
Retailer 12
-
HK$49,767 HKD
A$9,758 AUD
View
Retailer 13
-
HK$50,111 HKD
A$9,825 AUD
View
Price last confirmed 20 days ago
B+
Retailer 14
-
HK$50,217 HKD
$6,400 USD
View
B+
Retailer 15
-
HK$52,284 HKD
$6,663 USD
View
B+
Retailer 16
-
HK$55,677 HKD
€6,758 EUR
View
B+
Retailer 17
-
HK$62,154 HKD
ZAR 127,969 ZAR
View
B+
Retailer 18
-
HK$75,604 HKD
£7,587 GBP
View
Most Expensive
B
Queensmith
2557438429 · Oct 28
HK$78,922 HKD
£7,920 GBP
View
18 more retailers have this diamond
Prices start from HK$37,964 HKDSave up to HK$40,958 HKD

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
HK$37,964 HKD