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Radiant|Lab Grown|IGI

4.15ct H VS1 Radiant Lab Grown Diamond

EX • H/VS1 • IGI LG650491985

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

Certificate IGI LG650491985

Diamond specifications and retailer prices

From £1,047 GBP
As of October 31, 2026
2 retailers carry this diamond
Most expensive: £2,784 GBP at Rare Carat
View at Rare Carat

About this 4.15ct lab-grown radiant diamond

This 4.15ct 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 LG650491985 or 650491985. 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

4.15
Carat
H
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.8°
Pavilion angle33.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG650491985
Dimensions11.44 × 7.93 × 5.28 mm
L/W Ratio1.44
Top View
11.44 mm7.93 mm4.15 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG650491985
Side View
Table 63.0%Crown 42.8°Girdle: MediumPavilion 33.9°Culet: NoneDepth 66.6%

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: £2,784 GBP|Low: £420 GBP|High: £2,784 GBP|Avg: £1,274 GBP
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
March 27, 2026
Retailer 7£422 GBP
Retailer 9£440 GBP
Retailer 4£595 GBP
Retailer 3£668 GBP
Retailer 10£679 GBP
Retailer 5£890 GBP
Retailer 8£1,160 GBP
Retailer 2£1,240 GBP
Retailer 6£1,282 GBP
Rare Carat£2,784 GBP

42 data points across 10 retailers

2 retailers

B+
Cheapest Retailer
-
£1,047 GBP
Most Expensive
Rare Carat
650491985
£2,784 GBP
$3,730 USD
View
1 more retailer has this diamond
Prices start from £1,047 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+
4.15ct Radiant
£1,047 GBP