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Cushion|Natural|GIA

1.50ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 2556001331

Certificate GIA 2556001331

Diamond specifications and retailer prices

From £4,018 GBP
HK$41,800 HKD
As of October 29, 2026
Save £3,892 GBP (49%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £7,910 GBP at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

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 2556001331. Listed at 19 retailers as of October 27, 2026, with prices from £4,018 to £7,910, a £3,892 spread on the same certified stone. Wholesale Diamonds Direct lists it at £7,910. 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
FluorescenceNone
Crown angle42.13°
Pavilion angle57.03°
OriginNatural
Grading LabGIA
CertificateGIA 2556001331
Dimensions7.59 × 5.98 × 4.15 mm
L/W Ratio1.27
Top View
7.59 mm5.98 mm1.50 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556001331
Side View
Table 66.0%Crown 42.13°Girdle: STK-VTKPavilion 57.03°Culet: NoneDepth 69.5%

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: £4,968 GBP|Low: £3,946 GBP|High: £7,910 GBP|Avg: £5,500 GBP|+1.2%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Wholesale Diamonds Direct
October 29, 2026
Retailer 4£4,135 GBP
Retailer 10£4,648 GBP
Retailer 7£4,790 GBP
Retailer 3£4,797 GBP
Retailer 11£4,797 GBP
Retailer 1£4,968 GBP
Retailer 2£5,096 GBP
Retailer 9£5,426 GBP
Retailer 5£5,670 GBP
Retailer 6£6,328 GBP
Retailer 8£7,667 GBP
Wholesale Diamonds Direct£7,910 GBP

39 data points across 12 retailers

19 retailers£4,018 GBP to £7,910 GBP

A
Cheapest Retailer
-
£4,018 GBP
HK$41,800 HKD
A
Retailer 2
-
£4,135 GBP
₹524,427 INR
View
A
Retailer 3
-
£4,437 GBP
$5,909 USD
View
A
Retailer 4
-
£4,533 GBP
$6,036 USD
View
B+
Retailer 5
-
£4,622 GBP
SGD 8,317 SGD
View
Price last confirmed 14 days ago
A
Retailer 6
-
£4,648 GBP
SGD 8,364 SGD
View
B+
Retailer 7
-
£4,789 GBP
$6,378 USD
View
Price last confirmed 9 days ago
A
Retailer 8
-
£4,790 GBP
$6,379 USD
View
B+
Retailer 9
-
£4,797 GBP
$6,388 USD
View
Final sale: no returns
B+
Retailer 10
-
£4,797 GBP
$6,388 USD
View
Price last confirmed 13 days ago
B+
Retailer 11
-
£4,813 GBP
$6,410 USD
View
B+
Retailer 12
-
£4,968 GBP
View
B+
Retailer 13
-
£5,096 GBP
A$10,441 AUD
View
Price last confirmed 25 days ago
B+
Retailer 14
-
£5,317 GBP
$7,080 USD
View
B+
Retailer 15
-
£5,426 GBP
$7,225 USD
View
B+
Retailer 16
-
£5,670 GBP
€7,191 EUR
View
B+
Retailer 17
-
£6,328 GBP
ZAR 136,136 ZAR
View
B
Retailer 18
-
£7,667 GBP
View
Most Expensive
B
Wholesale Diamonds Direct
594101091 · Oct 27
£7,910 GBP
$10,534 USD
View
18 more retailers have this diamond
Prices start from £4,018 GBPSave up to £3,892 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
£4,018 GBP