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Radiant|Lab Grown|IGI

6.51ct F VS2 Radiant Lab Grown Diamond

EX • F/VS2 • IGI LG839612661

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG839612661

Diamond specifications and retailer prices

From £677 GBP
$907 USD
As of November 1, 2026
Save £3,532 GBP (84%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £4,209 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 6.51ct lab-grown radiant diamond

This 6.51ct lab-grown radiant sits in the over five carat band, graded F colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG839612661 or 839612661. Listed at 3 retailers as of October 31, 2026, with prices from £677 to £4,209, a £3,532 spread on the same certified stone. Brilliant Earth lists it at £4,209. 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

6.51
Carat
F
Colour
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.5°
Pavilion angle34.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839612661
Dimensions13.15 × 9.18 × 6.15 mm
L/W Ratio1.43
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.15 mm9.18 mm6.51 ctF / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839612661
Side View
Table 62.0%Crown 46.5°Girdle: MED-STKPavilion 34.4°Culet: NoneDepth 67.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £4,209 GBP|Low: £677 GBP|High: £8,195 GBP|Avg: £3,638 GBP|-48.6%
Brilliant Earth
Retailer 2
Retailer 3
November 2, 2026
Retailer 3£677 GBP
Retailer 2£1,103 GBP
Brilliant Earth£4,209 GBP

34 data points across 3 retailers

3 retailers£677 GBP to £4,209 GBP

A
Cheapest Retailer
-
£677 GBP
$907 USD
Final sale: no returns
A
Retailer 2
-
£1,103 GBP
View
Most Expensive
B
Brilliant Earth
21541977A · Oct 31
£4,209 GBP
$5,640 USD
View
2 more retailers have this diamond
Prices start from £677 GBPSave up to £3,532 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
6.51ct Radiant
£677 GBP