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Radiant|Lab Grown|IGI

4.12ct H VS1 Radiant Lab Grown Diamond

EX • H/VS1 • IGI LG850679169

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

Certificate IGI LG850679169

Diamond specifications and retailer prices

From £677 GBP
As of November 1, 2026
Save £1,443 GBP (68%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £2,120 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 4.12ct lab-grown radiant diamond

This 4.12ct lab-grown radiant sits in the three to five carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG850679169 or 850679169. Listed at 2 retailers as of October 31, 2026, with prices from £677 to £2,120, a £1,443 spread on the same certified stone. Brilliant Earth lists it at £2,120. 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

4.12
Carat
H
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.2°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG850679169
Dimensions11.24 × 7.89 × 5.31 mm
L/W Ratio1.42
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.24 mm7.89 mm4.12 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG850679169
Side View
Table 66.0%Crown 44.2°Girdle: Slightly ThickPavilion 35°Culet: NoneDepth 67.3%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £2,120 GBP|Low: £677 GBP|High: £2,120 GBP|Avg: £1,398 GBP
Brilliant Earth
Retailer 2
November 1, 2026
Retailer 2£677 GBP
Brilliant Earth£2,120 GBP

2 data points across 2 retailers

2 retailers£677 GBP to £2,120 GBP

A
Cheapest Retailer
-
£677 GBP
Most Expensive
B
Brilliant Earth
22380601A · Oct 31
£2,120 GBP
$2,840 USD
View
1 more retailer has this diamond
Prices start from £677 GBPSave up to £1,443 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
4.12ct Radiant
£677 GBP