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Radiant|Lab Grown|IGI

6.63ct G VS1 Radiant Lab Grown Diamond

ID • G/VS1 • IGI LG591346732

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

Certificate IGI LG591346732

Diamond specifications and retailer prices

From £701 GBP
$939 USD
As of October 31, 2026
Save £3,591 GBP (84%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £4,291 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 6.63ct lab-grown radiant diamond

This 6.63ct 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 LG591346732 or 591346732. Listed at 19 retailers as of October 29, 2026, with prices from £701 to £4,291, a £3,591 spread on the same certified stone. Brilliant Earth lists it at £4,291. 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

6.63
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.3°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591346732
Dimensions13.38 × 9.17 × 6.22 mm
L/W Ratio1.46
Culet sizePointed
Top View
13.38 mm9.17 mm6.63 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591346732
Side View
Table 65.0%Crown 43.3°Girdle: MediumPavilion 35.7°Culet: NoneDepth 67.8%

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: Oct 31
Current: £4,291 GBP|Low: £692 GBP|High: £4,291 GBP|Avg: £1,722 GBP
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
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Retailer 17
October 31, 2026
Retailer 15£701 GBP
Retailer 9£831 GBP
Retailer 13£858 GBP
Retailer 10£1,106 GBP
Retailer 3£1,108 GBP
Retailer 6£1,169 GBP
Retailer 2£1,194 GBP
Retailer 11£1,345 GBP
Retailer 12£1,405 GBP
Retailer 16£1,669 GBP
Retailer 17£1,979 GBP
Retailer 4£2,272 GBP
Retailer 7£2,298 GBP
Retailer 5£2,516 GBP
Retailer 8£2,576 GBP
Retailer 14£2,725 GBP
Brilliant Earth£4,291 GBP

38 data points across 17 retailers

19 retailers£701 GBP to £4,291 GBP

Retailer 1
-
£672 GBP
$901 USD
Price last confirmed 34 days ago
A
Retailer 2
-
£701 GBP
$939 USD
View
Final sale: no returns
Retailer 3
-
£708 GBP
$948 USD
View
Price last confirmed 34 days ago
Retailer 4
-
£831 GBP
$1,114 USD
View
Price last confirmed 20 days ago
A
Retailer 5
-
£858 GBP
$1,150 USD
View
A
Retailer 6
-
£1,106 GBP
View
A
Retailer 7
-
£1,108 GBP
$1,484 USD
View
B+
Retailer 8
-
£1,169 GBP
$1,566 USD
View
A
Retailer 9
-
£1,194 GBP
€1,524 EUR
View
A
Retailer 10
-
£1,345 GBP
A$2,773 AUD
View
A
Retailer 11
-
£1,405 GBP
ZAR 30,407 ZAR
View
A
Retailer 12
-
£1,669 GBP
$2,236 USD
View
B+
Retailer 13
-
£1,979 GBP
$2,652 USD
View
B+
Retailer 14
-
£2,272 GBP
$3,044 USD
View
Retailer 15
-
£2,298 GBP
View
Price last confirmed 20 days ago
B+
Retailer 16
-
£2,516 GBP
$3,371 USD
View
Retailer 17
-
£2,576 GBP
$3,451 USD
View
Price last confirmed 20 days ago
B+
Retailer 18
-
£2,725 GBP
View
Most Expensive
B
Brilliant Earth
7752978A · Oct 29
£4,291 GBP
$5,750 USD
View
18 more retailers have this diamond
Prices start from £701 GBPSave up to £3,591 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
6.63ct Radiant
£701 GBP