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Cushion|Lab Grown|IGI

5.28ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG799670188

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG799670188

Diamond specifications and retailer prices

From £6,285 GBP
$8,421 USD
As of October 30, 2026
Save £32,124 GBP (84%) vs most expensive(unlock to see where)
14 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 top-tier cut grade and certified by IGI LG799670188 or 799670188. Listed at 14 retailers as of October 30, 2026, with prices from £6,285 to £38,409, a £32,124 spread on the same certified stone. With Clarity lists it at £38,409. 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

5.28
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle34.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799670188
Dimensions11.32 × 9.42 × 6.17 mm
L/W Ratio1.20
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
11.32 mm9.42 mm5.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799670188
Side View
Table 60.0%Crown 36.6°Girdle: MED-STKPavilion 34.8°Culet: NoneDepth 65.5%

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 30
Current: £8,543 GBP|Low: £6,285 GBP|High: £39,263 GBP|Avg: £14,656 GBP|-17.3%
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
With Clarity
October 31, 2026
Retailer 7£6,285 GBP
Retailer 5£7,590 GBP
Retailer 12£7,728 GBP
Retailer 3£8,165 GBP
Retailer 6£8,271 GBP
Retailer 1£8,543 GBP
Retailer 13£11,947 GBP
Retailer 9£12,404 GBP
Retailer 8£12,960 GBP
Retailer 2£13,240 GBP
Retailer 11£14,395 GBP
Retailer 4£19,940 GBP
Retailer 10£22,844 GBP
With Clarity£38,409 GBP

38 data points across 14 retailers

14 retailers£6,285 GBP to £38,409 GBP

A
Cheapest Retailer
-
£6,285 GBP
$8,421 USD
A
Retailer 2
-
£7,590 GBP
$10,170 USD
View
A
Retailer 3
-
£7,728 GBP
HK$80,900 HKD
View
Retailer 4
-
£8,165 GBP
$10,940 USD
View
Price last confirmed 13 days ago
A
Retailer 5
-
£8,271 GBP
$11,082 USD
View
A
Retailer 6
-
£8,543 GBP
View
A
Retailer 7
-
£11,947 GBP
€15,246 EUR
View
A
Retailer 8
-
£12,404 GBP
$16,620 USD
View
B+
Retailer 9
-
£12,960 GBP
$17,365 USD
View
B+
Retailer 10
-
£13,240 GBP
View
B+
Retailer 11
-
£14,395 GBP
ZAR 311,603 ZAR
View
B+
Retailer 12
-
£19,940 GBP
$26,717 USD
View
B
Retailer 13
-
£22,844 GBP
$30,608 USD
View
Most Expensive
B
With Clarity
799670188 · Oct 31
£38,409 GBP
$51,464 USD
View
13 more retailers have this diamond
Prices start from £6,285 GBPSave up to £32,124 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
£6,285 GBP