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Round|Lab Grown|IGI

8.18ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG844671080

Shape and cutting style on the report: Round brilliant

Certificate IGI LG844671080

Diamond specifications and retailer prices

From £944 GBP
$1,265 USD
As of October 29, 2026
Save £5,041 GBP (84%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £5,986 GBP at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 8.18ct lab-grown round diamond

This 8.18ct lab-grown round 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 LG844671080 or 844671080. Listed at 3 retailers as of October 29, 2026, with prices from £944 to £5,986, a £5,041 spread on the same certified stone. Brilliant Earth lists it at £5,986. 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

8.18
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844671080
Dimensions12.80 × 12.86 × 7.96 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
12.80 mm12.86 mm8.18 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844671080
Side View
Table 57.0%Crown 35.6°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: £5,986 GBP|Low: £944 GBP|High: £5,986 GBP|Avg: £2,987 GBP
Brilliant Earth
Retailer 2
Retailer 3
October 31, 2026
Retailer 3£944 GBP
Retailer 2£1,434 GBP
Brilliant Earth£5,986 GBP

15 data points across 3 retailers

3 retailers£944 GBP to £5,986 GBP

A
Cheapest Retailer
-
£944 GBP
$1,265 USD
Final sale: no returns
A
Retailer 2
-
£1,434 GBP
View
Most Expensive
B
Brilliant Earth
22003634A · Oct 30
£5,986 GBP
$8,020 USD
View
2 more retailers have this diamond
Prices start from £944 GBPSave up to £5,041 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
8.18ct Round
£944 GBP