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Radiant|Lab Grown|IGI

6.25ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG851650215

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

Certificate IGI LG851650215

Diamond specifications and retailer prices

From £3,659 GBP
As of November 1, 2026
Save £2,782 GBP (43%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £6,441 GBP at With Clarity · As of October 31, 2026
View at With Clarity

About this 6.25ct lab-grown radiant diamond

This 6.25ct lab-grown radiant sits in the over five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG851650215 or 851650215. Listed at 2 retailers as of October 31, 2026, with prices from £3,659 to £6,441, a £2,782 spread on the same certified stone. With Clarity lists it at £6,441. 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

6.25
Carat
D
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.5°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851650215
Dimensions12.83 × 9.14 × 6.10 mm
L/W Ratio1.40
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.83 mm9.14 mm6.25 ctD / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG851650215
Side View
Table 66.0%Crown 44.5°Girdle: Slightly ThickPavilion 35.7°CuletDepth 66.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 1
Current: £3,659 GBP|Low: £3,659 GBP|High: £6,441 GBP|Avg: £5,513 GBP
Retailer 1
With Clarity
November 1, 2026
Retailer 1£3,659 GBP
With Clarity£6,441 GBP

2 data points across 2 retailers

2 retailers£3,659 GBP to £6,441 GBP

B
Cheapest Retailer
-
£3,659 GBP
Most Expensive
B
With Clarity
851650215 · Oct 31
£6,441 GBP
$8,630 USD
View
1 more retailer has this diamond
Prices start from £3,659 GBPSave up to £2,782 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.

B
6.25ct Radiant
£3,659 GBP