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8.91ct G VS1 Round Lab Grown Diamond

ID • G/VS1 • IGI LG819637629

Shape and cutting style on the report: Round brilliant

Certificate IGI LG819637629

Diamond specifications and retailer prices

From £1,085 GBP
$1,454 USD
As of November 1, 2026
Save £5,438 GBP (83%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £6,523 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 8.91ct lab-grown round diamond

This 8.91ct 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 LG819637629 or 819637629. Listed at 4 retailers as of October 31, 2026, with prices from £1,085 to £6,523, a £5,438 spread on the same certified stone. Brilliant Earth lists it at £6,523. 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

8.91
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG819637629
Dimensions13.25 × 13.29 × 8.19 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
13.25 mm13.29 mm8.91 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG819637629
Side View
Table 57.0%Crown 33.8°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £6,523 GBP|Low: £1,085 GBP|High: £6,530 GBP|Avg: £3,275 GBP|-0.1%
Brilliant Earth
Retailer 2
Retailer 3
November 1, 2026
Retailer 3£1,085 GBP
Retailer 2£1,601 GBP
Brilliant Earth£6,523 GBP

34 data points across 3 retailers

4 retailers£1,085 GBP to £6,523 GBP

A
Cheapest Retailer
-
£1,085 GBP
$1,454 USD
Final sale: no returns
A
Retailer 2
-
£1,601 GBP
View
Retailer 3
-
£4,146 GBP
$5,555 USD
View
Price last confirmed 8 days ago
Most Expensive
B
Brilliant Earth
21235646A · Oct 31
£6,523 GBP
$8,740 USD
View
3 more retailers have this diamond
Prices start from £1,085 GBPSave up to £5,438 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
8.91ct Round
£1,085 GBP