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Cushion|Natural|GIA

1.50ct E SI2 Cushion Natural Diamond

EX • E/SI2 • GIA 6555361215

Certificate GIA 6555361215

Diamond specifications and retailer prices

From £2,739 GBP
HK$28,500 HKD
As of October 29, 2026
Save £3,836 GBP (58%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £6,576 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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555361215. Listed at 15 retailers as of October 28, 2026, with prices from £2,739 to £6,576, a £3,836 spread on the same certified stone. Queensmith lists it at £6,576. 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
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555361215
Dimensions7.84 × 5.84 × 4.07 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Needle, Indented Natural
Top View
7.84 mm5.84 mm1.50 ctE / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555361215
Side View
Table 70.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.7%

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: £6,576 GBP|Low: £2,739 GBP|High: £6,619 GBP|Avg: £4,062 GBP|+2.2%
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
October 30, 2026
Retailer 12£2,739 GBP
Retailer 2£2,975 GBP
Retailer 5£3,256 GBP
Retailer 3£3,405 GBP
Retailer 6£3,486 GBP
Retailer 11£3,515 GBP
Retailer 7£3,668 GBP
Retailer 10£3,689 GBP
Retailer 4£3,802 GBP
Retailer 13£3,897 GBP
Retailer 9£4,168 GBP
Retailer 8£5,906 GBP
Queensmith£6,576 GBP

24 data points across 13 retailers

15 retailers£2,739 GBP to £6,576 GBP

A
Cheapest Retailer
-
£2,739 GBP
HK$28,500 HKD
A
Retailer 2
-
£2,975 GBP
₹377,248 INR
View
A
Retailer 3
-
£3,256 GBP
SGD 5,860 SGD
View
A
Retailer 4
-
£3,386 GBP
$4,509 USD
View
A
Retailer 5
-
£3,405 GBP
$4,534 USD
View
Final sale: no returns
A
Retailer 6
-
£3,486 GBP
View
A
Retailer 7
-
£3,515 GBP
SGD 6,325 SGD
View
A
Retailer 8
-
£3,668 GBP
View
A
Retailer 9
-
£3,670 GBP
A$7,518 AUD
View
A
Retailer 10
-
£3,689 GBP
$4,912 USD
View
A
Retailer 11
-
£3,802 GBP
$5,063 USD
View
A
Retailer 12
-
£3,897 GBP
$5,190 USD
View
A
Retailer 13
-
£4,168 GBP
€5,286 EUR
View
B+
Retailer 14
-
£5,906 GBP
View
Most Expensive
B
Queensmith
6555361215 · Oct 28
£6,576 GBP
View
14 more retailers have this diamond
Prices start from £2,739 GBPSave up to £3,836 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
£2,739 GBP