Radiant|Lab Grown|IGI

4.15ct H VS1 Radiant Lab Grown Diamond

ID • H/VS1 • IGI LG579366342

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

Certificate IGI LG579366342

Diamond specifications and retailer prices

From £390 GBP
$523 USD
As of October 30, 2026
Save £2,371 GBP (86%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: £2,761 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 LG579366342 or 579366342. Listed at 22 retailers as of October 30, 2026, with prices from £390 to £2,761, a £2,371 spread on the same certified stone. Brilliant Earth lists it at £2,761. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.3°
Pavilion angle36.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG579366342
Dimensions11.80 × 7.90 × 5.19 mm
L/W Ratio1.49
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
11.80 mm7.90 mm4.15 ctH / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG579366342
Side View
Table 64.0%Crown 44.3°Girdle: MediumPavilion 36.6°Culet: NoneDepth 65.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £2,761 GBP|Low: £361 GBP|High: £2,896 GBP|Avg: £1,005 GBP|-3.6%
Brilliant Earth
Retailer 2
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Retailer 6
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Retailer 11
Retailer 12
Retailer 13
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Retailer 15
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Retailer 17
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Retailer 19
November 1, 2026
Retailer 9£390 GBP
Retailer 11£437 GBP
Retailer 17£437 GBP
Retailer 7£484 GBP
Retailer 2£533 GBP
Retailer 4£586 GBP
Retailer 19£649 GBP
Retailer 18£688 GBP
Retailer 12£800 GBP
Retailer 16£963 GBP
Retailer 14£970 GBP
Retailer 5£973 GBP
Retailer 13£1,064 GBP
Retailer 6£1,272 GBP
Retailer 8£1,410 GBP
Retailer 10£1,573 GBP
Retailer 3£1,583 GBP
Retailer 15£2,031 GBP
Brilliant Earth£2,761 GBP

40 data points across 19 retailers

22 retailers£390 GBP to £2,761 GBP

A
Cheapest Retailer
-
£390 GBP
$523 USD
A
Retailer 2
-
£437 GBP
$585 USD
View
Final sale: no returns
A
Retailer 3
-
£437 GBP
$586 USD
View
Retailer 4
-
£478 GBP
$641 USD
View
Price last confirmed 16 days ago
A
Retailer 5
-
£484 GBP
$648 USD
View
A
Retailer 6
-
£533 GBP
View
A
Retailer 7
-
£586 GBP
$785 USD
View
B+
Retailer 8
-
£649 GBP
$870 USD
View
A
Retailer 9
-
£688 GBP
HK$7,200 HKD
View
A
Retailer 10
-
£800 GBP
€1,021 EUR
View
A
Retailer 11
-
£963 GBP
ZAR 20,844 ZAR
View
A
Retailer 12
-
£970 GBP
A$1,999 AUD
View
A
Retailer 13
-
£973 GBP
$1,304 USD
View
B+
Retailer 14
-
£1,064 GBP
$1,425 USD
View
B+
Retailer 15
-
£1,249 GBP
$1,673 USD
View
B+
Retailer 16
-
£1,272 GBP
$1,705 USD
View
B+
Retailer 17
-
£1,410 GBP
View
B+
Retailer 18
-
£1,573 GBP
$2,108 USD
View
B+
Retailer 19
-
£1,583 GBP
$2,120 USD
View
B
Retailer 20
-
£1,970 GBP
CA$3,667 CAD
View
B
Retailer 21
-
£2,031 GBP
View
Most Expensive
B
Brilliant Earth
16070552A · Oct 31
£2,761 GBP
$3,700 USD
View
21 more retailers have this diamond
Prices start from £390 GBPSave up to £2,371 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
4.15ct Radiant
£390 GBP