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Round|Lab Grown|IGI

7.90ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG831631793

Shape and cutting style on the report: Round brilliant

Certificate IGI LG831631793

Diamond specifications and retailer prices

From £820 GBP
$1,101 USD
As of November 1, 2026
Save £3,002 GBP (79%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £3,823 GBP at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 7.9ct lab-grown round diamond

This 7.9ct lab-grown round sits in the over five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG831631793 or 831631793. Listed at 3 retailers as of November 1, 2026, with prices from £820 to £3,823, a £3,002 spread on the same certified stone. Brilliant Earth lists it at £3,823. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

7.90
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831631793
Dimensions12.89 × 12.93 × 7.80 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
12.89 mm12.93 mm7.90 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831631793
Side View
Table 60.0%Crown 33.5°Girdle: MediumPavilion 41.4°Culet: NoneDepth 60.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £3,823 GBP|Low: £820 GBP|High: £3,942 GBP|Avg: £2,306 GBP|-3.0%
Brilliant Earth
Retailer 2
Retailer 3
November 2, 2026
Retailer 3£820 GBP
Retailer 2£1,246 GBP
Brilliant Earth£3,823 GBP

35 data points across 3 retailers

3 retailers£820 GBP to £3,823 GBP

A
Cheapest Retailer
-
£820 GBP
$1,101 USD
Final sale: no returns
B+
Retailer 2
-
£1,246 GBP
View
Most Expensive
B
Brilliant Earth
21230539A · Nov 2
£3,823 GBP
$5,130 USD
View
2 more retailers have this diamond
Prices start from £820 GBPSave up to £3,002 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
7.90ct Round
£820 GBP