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Cushion|Lab Grown|IGI

5.28ct D FL Cushion Lab Grown Diamond

VG • D/FL • IGI LG836603655

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG836603655

Diamond specifications and retailer prices

From £7,426 GBP
$9,950 USD
As of November 1, 2026
Save £30,983 GBP (81%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £38,409 GBP at With Clarity · As of October 31, 2026
View at With Clarity

About this 5.28ct lab-grown cushion diamond

This 5.28ct lab-grown cushion sits in the over five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG836603655 or 836603655. Listed at 13 retailers as of October 31, 2026, with prices from £7,426 to £38,409, a £30,983 spread on the same certified stone. With Clarity lists it at £38,409. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

5.28
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle36.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836603655
Dimensions11.41 × 9.35 × 6.22 mm
L/W Ratio1.22
Girdle conditionFaceted
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
11.41 mm9.35 mm5.28 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836603655
Side View
Table 64.0%Crown 35°Girdle: MED-THKPavilion 36.5°Culet: NoneDepth 66.5%

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: Nov 1
Current: £8,109 GBP|Low: £7,426 GBP|High: £39,263 GBP|Avg: £14,849 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
With Clarity
November 1, 2026
Retailer 6£7,426 GBP
Retailer 3£7,728 GBP
Retailer 1£8,109 GBP
Retailer 9£8,271 GBP
Retailer 7£8,543 GBP
Retailer 8£11,864 GBP
Retailer 11£12,404 GBP
Retailer 10£12,960 GBP
Retailer 5£13,153 GBP
Retailer 2£14,395 GBP
Retailer 4£19,940 GBP
Retailer 12£22,844 GBP
With Clarity£38,409 GBP

9 data points across 13 retailers

13 retailers£7,426 GBP to £38,409 GBP

A
Cheapest Retailer
-
£7,426 GBP
$9,950 USD
A
Retailer 2
-
£7,728 GBP
HK$80,900 HKD
View
Retailer 3
-
£8,109 GBP
$10,865 USD
View
A
Retailer 4
-
£8,271 GBP
$11,082 USD
View
A
Retailer 5
-
£8,543 GBP
View
B+
Retailer 6
-
£11,864 GBP
€15,139 EUR
View
B+
Retailer 7
-
£12,404 GBP
$16,620 USD
View
B+
Retailer 8
-
£12,960 GBP
$17,365 USD
View
B+
Retailer 9
-
£13,153 GBP
View
B+
Retailer 10
-
£14,395 GBP
ZAR 311,603 ZAR
View
B
Retailer 11
-
£19,940 GBP
$26,717 USD
View
B
Retailer 12
-
£22,844 GBP
$30,608 USD
View
Most Expensive
B
With Clarity
836603655 · Oct 31
£38,409 GBP
$51,464 USD
View
12 more retailers have this diamond
Prices start from £7,426 GBPSave up to £30,983 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
5.28ct Cushion
£7,426 GBP