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Radiant|Lab Grown|IGI

6.79ct G VS1 Radiant Lab Grown Diamond

ID • G/VS1 • IGI LG591346727

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

Certificate IGI LG591346727

Diamond specifications and retailer prices

From £937 GBP
$1,255 USD
As of October 31, 2026
Save £3,459 GBP (79%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £4,396 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 6.79ct lab-grown radiant diamond

This 6.79ct 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 LG591346727 or 591346727. Listed at 12 retailers as of October 31, 2026, with prices from £937 to £4,396, a £3,459 spread on the same certified stone. Brilliant Earth lists it at £4,396. 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

6.79
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.6°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591346727
Dimensions10.63 × 10.47 × 7.02 mm
L/W Ratio1.02
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
10.63 mm10.47 mm6.79 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591346727
Side View
Table 63.0%Crown 43.6°Girdle: MediumPavilion 35.9°Culet: NoneDepth 67.0%

Caratlytics Score

How it works →
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 31
Current: £4,396 GBP|Low: £561 GBP|High: £4,530 GBP|Avg: £2,063 GBP|-3.0%
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
November 1, 2026
Retailer 3£776 GBP
Retailer 4£922 GBP
Retailer 7£937 GBP
Retailer 10£1,175 GBP
Retailer 13£1,290 GBP
Retailer 6£1,317 GBP
Retailer 8£1,558 GBP
Retailer 11£2,218 GBP
Retailer 9£2,518 GBP
Retailer 2£2,730 GBP
Retailer 12£2,800 GBP
Retailer 5£2,814 GBP
Brilliant Earth£4,396 GBP

31 data points across 13 retailers

12 retailers£937 GBP to £4,396 GBP

Retailer 1
-
£922 GBP
$1,236 USD
Price last confirmed 21 days ago
A
Retailer 2
-
£937 GBP
$1,255 USD
View
A
Retailer 3
-
£1,175 GBP
$1,574 USD
View
B+
Retailer 4
-
£1,290 GBP
$1,728 USD
View
A
Retailer 5
-
£1,317 GBP
€1,681 EUR
View
A
Retailer 6
-
£1,558 GBP
ZAR 33,718 ZAR
View
B+
Retailer 7
-
£2,218 GBP
View
B+
Retailer 8
-
£2,518 GBP
$3,374 USD
View
B+
Retailer 9
-
£2,730 GBP
View
B+
Retailer 10
-
£2,800 GBP
$3,751 USD
View
Retailer 11
-
£2,814 GBP
$3,770 USD
View
Price last confirmed 21 days ago
Most Expensive
B
Brilliant Earth
7854881A · Oct 31
£4,396 GBP
$5,890 USD
View
11 more retailers have this diamond
Prices start from £937 GBPSave up to £3,459 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
6.79ct Radiant
£937 GBP