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Cushion|Lab Grown|IGI

5.00ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG761511998

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG761511998

Diamond specifications and retailer prices

From £481 GBP
$640 USD
As of October 27, 2026
Save £2,486 GBP (84%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £2,966 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 5ct lab-grown cushion diamond

This 5ct lab-grown cushion sits in the over five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG761511998 or 761511998. Listed at 15 retailers as of October 27, 2026, with prices from £481 to £2,966, a £2,486 spread on the same certified stone. Brilliant Earth lists it at £2,966. 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

5.00
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle31.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG761511998
Dimensions11.43 × 8.65 × 5.49 mm
L/W Ratio1.32
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.43 mm8.65 mm5.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG761511998
Side View
Table 61.0%Crown 34.6°Girdle: MED-STKPavilion 31.3°Culet: NoneDepth 63.5%

Caratlytics Score

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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 27
Current: £2,966 GBP|Low: £481 GBP|High: £2,966 GBP|Avg: £1,249 GBP
Brilliant Earth
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 6£481 GBP
Retailer 12£560 GBP
Retailer 3£577 GBP
Retailer 9£631 GBP
Retailer 2£770 GBP
Retailer 5£797 GBP
Retailer 14£819 GBP
Retailer 8£826 GBP
Retailer 13£1,204 GBP
Retailer 4£1,501 GBP
Retailer 7£1,659 GBP
Retailer 11£2,215 GBP
Retailer 10£2,322 GBP
Brilliant Earth£2,966 GBP

42 data points across 14 retailers

15 retailers£481 GBP to £2,966 GBP

A
Cheapest Retailer
-
£481 GBP
$640 USD
Final sale: no returns
Retailer 2
-
£560 GBP
View
Price last confirmed 12 days ago
A
Retailer 3
-
£577 GBP
HK$6,000 HKD
View
A
Retailer 4
-
£631 GBP
$840 USD
View
A
Retailer 5
-
£770 GBP
€976 EUR
View
A
Retailer 6
-
£797 GBP
$1,062 USD
View
B+
Retailer 7
-
£819 GBP
$1,091 USD
View
A
Retailer 8
-
£826 GBP
View
B+
Retailer 9
-
£1,204 GBP
$1,604 USD
View
B+
Retailer 10
-
£1,501 GBP
$1,999 USD
View
B+
Retailer 11
-
£1,659 GBP
SGD 2,986 SGD
View
B
Retailer 12
-
£2,060 GBP
View
Retailer 13
-
£2,215 GBP
$2,950 USD
View
Price last confirmed 8 days ago
Retailer 14
-
£2,322 GBP
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
17309863A · Oct 29
£2,966 GBP
$3,950 USD
View
14 more retailers have this diamond
Prices start from £481 GBPSave up to £2,486 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
5.00ct Cushion
£481 GBP