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Cushion|Lab Grown|IGI

5.02ct E IF Cushion Lab Grown Diamond

EX • E/IF • IGI LG678556778

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG678556778

Diamond specifications and retailer prices

From £3,550 GBP
$4,756 USD
As of October 30, 2026
Save £9,540 GBP (73%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £13,089 GBP at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 5.02ct lab-grown cushion diamond

This 5.02ct lab-grown cushion sits in the over five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG678556778 or 678556778. Listed at 17 retailers as of October 30, 2026, with prices from £3,550 to £13,089, a £9,540 spread on the same certified stone. Taylor and Hart lists it at £13,089. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

5.02
Carat
E
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG678556778
Dimensions9.83 × 9.83 × 6.36 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
9.83 mm9.83 mm5.02 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG678556778
Side View
Table 63.0%Crown 36.2°Girdle: STK-VTKPavilion 38.7°Culet: NoneDepth 64.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £4,385 GBP|Low: £1,919 GBP|High: £13,089 GBP|Avg: £5,633 GBP
Retailer 1
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
Taylor and Hart
October 31, 2026
Retailer 8£2,784 GBP
Retailer 13£3,550 GBP
Retailer 4£3,713 GBP
Retailer 1£4,385 GBP
Retailer 9£4,759 GBP
Retailer 16£5,164 GBP
Retailer 5£5,627 GBP
Retailer 7£5,669 GBP
Retailer 11£6,004 GBP
Retailer 15£6,360 GBP
Retailer 2£6,625 GBP
Retailer 10£7,469 GBP
Retailer 12£7,653 GBP
Retailer 3£9,839 GBP
Retailer 14£10,214 GBP
Retailer 6£10,949 GBP
Taylor and Hart£13,089 GBP

39 data points across 17 retailers

17 retailers£3,550 GBP to £13,089 GBP

Retailer 1
-
£2,784 GBP
$3,730 USD
Price last confirmed 20 days ago
A
Retailer 2
-
£3,550 GBP
$4,756 USD
View
Final sale: no returns
A
Retailer 3
-
£3,713 GBP
$4,975 USD
View
A
Retailer 4
-
£4,385 GBP
$5,875 USD
View
A
Retailer 5
-
£4,759 GBP
View
A
Retailer 6
-
£5,164 GBP
View
A
Retailer 7
-
£5,627 GBP
$7,540 USD
View
Retailer 8
-
£5,669 GBP
A$11,686 AUD
View
Price last confirmed 8 days ago
A
Retailer 9
-
£6,004 GBP
€7,661 EUR
View
A
Retailer 10
-
£6,360 GBP
$8,522 USD
View
A
Retailer 11
-
£6,625 GBP
$8,877 USD
View
A
Retailer 12
-
£7,469 GBP
ZAR 161,667 ZAR
View
A
Retailer 13
-
£7,653 GBP
View
A
Retailer 14
-
£9,839 GBP
$13,183 USD
View
B+
Retailer 15
-
£10,214 GBP
$13,685 USD
View
B+
Retailer 16
-
£10,949 GBP
$14,670 USD
View
Most Expensive
B+
Taylor and Hart
DURVXYQ · Oct 30
£13,089 GBP
$17,538 USD
View
16 more retailers have this diamond
Prices start from £3,550 GBPSave up to £9,540 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
5.02ct Cushion
£3,550 GBP