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Round|Lab Grown|IGI

5.16ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG792621304

Shape and cutting style on the report: Round brilliant

Certificate IGI LG792621304

Diamond specifications and retailer prices

From £14,218 GBP
$19,050 USD
As of October 31, 2026
2 retailers carry this diamond
Most expensive: £14,218 GBP at Brilliant Earth
View at Brilliant Earth

About this 5.16ct lab-grown round diamond

This 5.16ct 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 LG792621304 or 792621304. Listed at 2 retailers as of October 31, 2026. 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

5.16
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG792621304
Dimensions11.13 × 11.08 × 6.83 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
11.13 mm11.08 mm5.16 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG792621304
Side View
Table 56.0%Crown 34.5°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.5%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 31
Current: £14,218 GBP|Low: £5,941 GBP|High: £29,559 GBP|Avg: £18,549 GBP|-45.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
October 30, 2026
Retailer 2£5,941 GBP
Retailer 4£9,605 GBP
Retailer 3£11,734 GBP
Brilliant Earth£14,218 GBP
Retailer 5£20,600 GBP
Retailer 6£28,501 GBP
Retailer 7£29,559 GBP

6 data points across 7 retailers

2 retailers

Retailer 1
-
£5,941 GBP
$7,960 USD
Price last confirmed 13 days ago
Most Expensive
B+
Brilliant Earth
21398242Y · Oct 31
£14,218 GBP
$19,050 USD
View
1 more retailer has this diamond

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.

B+
5.16ct Round
£14,218 GBP