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Cushion|Lab Grown|IGI

5.03ct D IF Cushion Lab Grown Diamond

EX • D/IF • IGI LG633427879

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG633427879

Diamond specifications and retailer prices

From £3,822 GBP
$5,121 USD
As of October 30, 2026
Save £10,407 GBP (73%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £14,229 GBP at Taylor and Hart · As of October 30, 2026
View at Taylor and Hart

About this 5.03ct lab-grown cushion diamond

This 5.03ct lab-grown cushion sits in the over five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG633427879 or 633427879. Listed at 18 retailers as of October 30, 2026, with prices from £3,822 to £14,229, a £10,407 spread on the same certified stone. Taylor and Hart lists it at £14,229. 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

5.03
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle39.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG633427879
Dimensions9.78 × 9.78 × 6.35 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
9.78 mm9.78 mm5.03 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG633427879
Side View
Table 63.0%Crown 34.5°Girdle: THK-VTKPavilion 39.2°Culet: NoneDepth 64.9%

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: £7,160 GBP|Low: £3,642 GBP|High: £14,229 GBP|Avg: £6,623 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 30, 2026
Retailer 5£3,822 GBP
Retailer 8£3,933 GBP
Retailer 3£4,008 GBP
Retailer 10£5,171 GBP
Retailer 16£5,619 GBP
Retailer 7£6,060 GBP
Retailer 4£6,112 GBP
Retailer 12£6,525 GBP
Retailer 15£6,762 GBP
Retailer 2£7,068 GBP
Retailer 1£7,160 GBP
Retailer 11£8,085 GBP
Retailer 6£8,154 GBP
Retailer 13£8,284 GBP
Retailer 9£10,740 GBP
Retailer 14£11,061 GBP
Taylor and Hart£14,229 GBP

36 data points across 17 retailers

18 retailers£3,822 GBP to £14,229 GBP

A
Cheapest Retailer
-
£3,822 GBP
$5,121 USD
Retailer 2
-
£3,933 GBP
$5,270 USD
View
Price last confirmed 20 days ago
A
Retailer 3
-
£4,008 GBP
$5,370 USD
View
A
Retailer 4
-
£5,171 GBP
View
Retailer 5
-
£5,200 GBP
View
Price last confirmed 18 days ago
A
Retailer 6
-
£5,619 GBP
View
Retailer 7
-
£6,060 GBP
$8,120 USD
View
Price last confirmed 12 days ago
A
Retailer 8
-
£6,112 GBP
$8,190 USD
View
A
Retailer 9
-
£6,525 GBP
€8,326 EUR
View
A
Retailer 10
-
£6,762 GBP
$9,060 USD
View
A
Retailer 11
-
£7,068 GBP
$9,470 USD
View
A
Retailer 12
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£7,160 GBP
$9,594 USD
View
Final sale: no returns
A
Retailer 13
-
£8,085 GBP
ZAR 175,010 ZAR
View
Retailer 14
-
£8,154 GBP
A$16,808 AUD
View
Price last confirmed 8 days ago
A
Retailer 15
-
£8,284 GBP
View
A
Retailer 16
-
£10,740 GBP
$14,390 USD
View
B+
Retailer 17
-
£11,061 GBP
$14,820 USD
View
Most Expensive
B+
Taylor and Hart
QRCH1TB · Oct 30
£14,229 GBP
$19,065 USD
View
17 more retailers have this diamond
Prices start from £3,822 GBPSave up to £10,407 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
5.03ct Cushion
£3,822 GBP