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Cushion|Natural|GIA

1.50ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 7542750439

Certificate GIA 7542750439

Diamond specifications and retailer prices

From £3,864 GBP
HK$40,200 HKD
As of October 29, 2026
Save £3,904 GBP (50%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £7,768 GBP 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 7542750439. Listed at 18 retailers as of October 28, 2026, with prices from £3,864 to £7,768, a £3,904 spread on the same certified stone. Queensmith lists it at £7,768. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7542750439
Dimensions7.63 × 5.86 × 4.03 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Indented Natural, Natural
Top View
7.63 mm5.86 mm1.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 7542750439
Side View
Table 66.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.7%

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: £7,768 GBP|Low: £3,864 GBP|High: £7,830 GBP|Avg: £5,349 GBP|+1.3%
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
October 29, 2026
Retailer 11£3,864 GBP
Retailer 7£4,170 GBP
Retailer 10£4,341 GBP
Retailer 5£4,592 GBP
Retailer 12£4,749 GBP
Retailer 4£4,777 GBP
Retailer 2£4,919 GBP
Retailer 13£5,046 GBP
Retailer 6£5,076 GBP
Retailer 14£5,265 GBP
Retailer 8£5,613 GBP
Retailer 9£6,265 GBP
Retailer 3£7,620 GBP
Queensmith£7,768 GBP

30 data points across 14 retailers

18 retailers£3,864 GBP to £7,768 GBP

A
Cheapest Retailer
-
£3,864 GBP
HK$40,200 HKD
A
Retailer 2
-
£4,170 GBP
₹528,815 INR
View
A
Retailer 3
-
£4,341 GBP
$5,781 USD
View
A
Retailer 4
-
£4,475 GBP
SGD 8,053 SGD
View
Price last confirmed 15 days ago
A
Retailer 5
-
£4,592 GBP
SGD 8,264 SGD
View
B+
Retailer 6
-
£4,749 GBP
$6,324 USD
View
Final sale: no returns
B+
Retailer 7
-
£4,774 GBP
$6,358 USD
View
B+
Retailer 8
-
£4,776 GBP
$6,360 USD
View
B+
Retailer 9
-
£4,777 GBP
$6,362 USD
View
Price last confirmed 13 days ago
B+
Retailer 10
-
£4,919 GBP
View
B+
Retailer 11
-
£5,046 GBP
$6,720 USD
View
B+
Retailer 12
-
£5,076 GBP
A$10,399 AUD
View
Price last confirmed 25 days ago
B+
Retailer 13
-
£5,265 GBP
$7,011 USD
View
B+
Retailer 14
-
£5,402 GBP
A$11,068 AUD
View
B+
Retailer 15
-
£5,613 GBP
€7,119 EUR
View
B+
Retailer 16
-
£6,265 GBP
ZAR 134,781 ZAR
View
B
Retailer 17
-
£7,620 GBP
View
Most Expensive
B
Queensmith
7542750439 · Oct 28
£7,768 GBP
View
17 more retailers have this diamond
Prices start from £3,864 GBPSave up to £3,904 GBP

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
£3,864 GBP