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Round|Lab Grown|IGI

5.09ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG811634738

Shape and cutting style on the report: Round brilliant

Certificate IGI LG811634738

Diamond specifications and retailer prices

From £5,833 GBP
$7,816 USD
As of October 30, 2026
Save £20,702 GBP (78%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £26,536 GBP at With Clarity · As of October 31, 2026
View at With Clarity

About this 5.09ct lab-grown round diamond

This 5.09ct 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 LG811634738 or 811634738. Listed at 13 retailers as of October 30, 2026, with prices from £5,833 to £26,536, a £20,702 spread on the same certified stone. With Clarity lists it at £26,536. 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

5.09
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811634738
Dimensions11.08 × 11.01 × 6.76 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
HEARTS & ARROWS 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
11.08 mm11.01 mm5.09 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811634738
Side View
Table 58.0%Crown 34.8°Girdle: MediumPavilion 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 30
Current: £8,041 GBP|Low: £5,740 GBP|High: £26,562 GBP|Avg: £13,055 GBP|+0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
With Clarity
November 1, 2026
Retailer 11£5,833 GBP
Retailer 9£6,467 GBP
Retailer 3£6,844 GBP
Retailer 12£7,117 GBP
Retailer 4£7,796 GBP
Retailer 1£8,041 GBP
Retailer 5£10,929 GBP
Retailer 10£11,991 GBP
Retailer 8£12,235 GBP
Retailer 7£13,319 GBP
Retailer 6£16,374 GBP
Retailer 2£21,761 GBP
With Clarity£26,562 GBP

43 data points across 13 retailers

13 retailers£5,833 GBP to £26,536 GBP

A
Cheapest Retailer
-
£5,833 GBP
$7,816 USD
Retailer 2
-
£6,467 GBP
$8,665 USD
View
Price last confirmed 13 days ago
A
Retailer 3
-
£6,844 GBP
$9,170 USD
View
A
Retailer 4
-
£7,117 GBP
HK$74,500 HKD
View
A
Retailer 5
-
£7,796 GBP
$10,446 USD
View
A
Retailer 6
-
£8,041 GBP
View
A
Retailer 7
-
£10,929 GBP
€13,946 EUR
View
A
Retailer 8
-
£11,991 GBP
$16,067 USD
View
B+
Retailer 9
-
£12,235 GBP
View
B+
Retailer 10
-
£13,319 GBP
ZAR 288,310 ZAR
View
B+
Retailer 11
-
£16,374 GBP
$21,940 USD
View
B
Retailer 12
-
£21,761 GBP
$29,158 USD
View
Most Expensive
B
With Clarity
811634738 · Oct 31
£26,536 GBP
$35,555 USD
View
12 more retailers have this diamond
Prices start from £5,833 GBPSave up to £20,702 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
5.09ct Round
£5,833 GBP