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Round|Lab Grown|IGI

5.40ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG811634439

Shape and cutting style on the report: Round brilliant

Certificate IGI LG811634439

Diamond specifications and retailer prices

From £7,258 GBP
$9,725 USD
As of October 26, 2026
Save £30,279 GBP (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £37,537 GBP at With Clarity · As of October 31, 2026
View at With Clarity

About this 5.4ct lab-grown round diamond

This 5.4ct lab-grown round 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 LG811634439 or 811634439. Listed at 10 retailers as of October 26, 2026, with prices from £7,258 to £37,537, a £30,279 spread on the same certified stone. With Clarity lists it at £37,537. 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

5.40
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811634439
Dimensions11.23 × 11.29 × 6.89 mm
L/W Ratio1.01
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
11.23 mm11.29 mm5.40 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811634439
Side View
Table 58.0%Crown 34.7°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 61.2%

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 26
Current: £8,528 GBP|Low: £6,773 GBP|High: £38,340 GBP|Avg: £13,715 GBP|+2.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
With Clarity
November 1, 2026
Retailer 8£7,258 GBP
Retailer 5£7,392 GBP
Retailer 6£7,547 GBP
Retailer 1£8,528 GBP
Retailer 9£8,647 GBP
Retailer 3£11,594 GBP
Retailer 2£12,054 GBP
Retailer 4£12,959 GBP
Retailer 10£19,063 GBP
Retailer 7£22,555 GBP
With Clarity£38,340 GBP

42 data points across 11 retailers

10 retailers£7,258 GBP to £37,537 GBP

A
Cheapest Retailer
-
£7,258 GBP
$9,725 USD
Retailer 2
-
£7,392 GBP
$9,905 USD
View
Price last confirmed 27 days ago
A
Retailer 3
-
£7,547 GBP
HK$79,000 HKD
View
A
Retailer 4
-
£8,528 GBP
View
A
Retailer 5
-
£8,647 GBP
$11,586 USD
View
A
Retailer 6
-
£11,594 GBP
€14,795 EUR
View
B+
Retailer 7
-
£12,959 GBP
View
B+
Retailer 8
-
£19,063 GBP
$25,542 USD
View
B
Retailer 9
-
£22,555 GBP
$30,221 USD
View
Most Expensive
B
With Clarity
811634439 · Oct 31
£37,537 GBP
$50,295 USD
View
9 more retailers have this diamond
Prices start from £7,258 GBPSave up to £30,279 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
5.40ct Round
£7,258 GBP