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Radiant|Lab Grown|IGI

6.18ct G VS1 Radiant Lab Grown Diamond

ID • G/VS1 • IGI LG574364390

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

Certificate IGI LG574364390

Diamond specifications and retailer prices

From £810 GBP
$1,085 USD
As of November 2, 2026
Save £3,414 GBP (81%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £4,224 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 6.18ct lab-grown radiant diamond

This 6.18ct lab-grown radiant sits in the over five carat band, graded G colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG574364390 or 574364390. Listed at 16 retailers as of October 31, 2026, with prices from £810 to £4,224, a £3,414 spread on the same certified stone. Brilliant Earth lists it at £4,224. 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

6.18
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG574364390
Dimensions13.11 × 8.92 × 6.08 mm
L/W Ratio1.47
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
13.11 mm8.92 mm6.18 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG574364390
Side View
Table 64.5%Crown 44°Girdle: MediumPavilion 35.2°Culet: NoneDepth 68.2%

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: Nov 2
Current: £4,224 GBP|Low: £647 GBP|High: £4,359 GBP|Avg: £1,639 GBP|-2.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 2, 2026
Retailer 6£654 GBP
Retailer 8£670 GBP
Retailer 13£810 GBP
Retailer 2£1,040 GBP
Retailer 16£1,049 GBP
Retailer 5£1,096 GBP
Retailer 10£1,115 GBP
Retailer 11£1,257 GBP
Retailer 12£1,313 GBP
Retailer 14£1,614 GBP
Retailer 15£1,735 GBP
Retailer 3£2,293 GBP
Retailer 4£2,344 GBP
Retailer 7£2,432 GBP
Retailer 9£2,543 GBP
Brilliant Earth£4,224 GBP

40 data points across 16 retailers

16 retailers£810 GBP to £4,224 GBP

Retailer 1
-
£628 GBP
$842 USD
Price last confirmed 35 days ago
Retailer 2
-
£661 GBP
$886 USD
View
Price last confirmed 35 days ago
A
Retailer 3
-
£810 GBP
$1,085 USD
View
A
Retailer 4
-
£1,040 GBP
View
A
Retailer 5
-
£1,049 GBP
$1,406 USD
View
B+
Retailer 6
-
£1,096 GBP
$1,468 USD
View
A
Retailer 7
-
£1,115 GBP
€1,423 EUR
View
A
Retailer 8
-
£1,257 GBP
A$2,591 AUD
View
A
Retailer 9
-
£1,313 GBP
ZAR 28,411 ZAR
View
B+
Retailer 10
-
£1,614 GBP
$2,162 USD
View
B+
Retailer 11
-
£1,735 GBP
$2,325 USD
View
B+
Retailer 12
-
£2,293 GBP
$3,072 USD
View
B+
Retailer 13
-
£2,344 GBP
$3,141 USD
View
Retailer 14
-
£2,432 GBP
$3,258 USD
View
Price last confirmed 22 days ago
B+
Retailer 15
-
£2,543 GBP
View
Most Expensive
B
Brilliant Earth
7623653A · Oct 31
£4,224 GBP
$5,660 USD
View
15 more retailers have this diamond
Prices start from £810 GBPSave up to £3,414 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
6.18ct Radiant
£810 GBP