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Radiant|Lab Grown|IGI

6.67ct G VS1 Radiant Lab Grown Diamond

ID • G/VS1 • IGI LG620435584

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

Certificate IGI LG620435584

Diamond specifications and retailer prices

From £675 GBP
$904 USD
As of October 30, 2026
Save £3,639 GBP (84%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: £4,314 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 6.67ct lab-grown radiant diamond

This 6.67ct 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 LG620435584 or 620435584. Listed at 23 retailers as of October 29, 2026, with prices from £675 to £4,314, a £3,639 spread on the same certified stone. Brilliant Earth lists it at £4,314. 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

6.67
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.3°
Pavilion angle32.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620435584
Dimensions13.58 × 9.16 × 5.97 mm
L/W Ratio1.48
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
13.58 mm9.16 mm6.67 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620435584
Side View
Table 66.0%Crown 46.3°Girdle: MED-STKPavilion 32.5°Culet: NoneDepth 65.2%

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 30
Current: £4,314 GBP|Low: £648 GBP|High: £4,314 GBP|Avg: £1,513 GBP
Brilliant Earth
Retailer 2
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Retailer 11
Retailer 12
Retailer 13
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Retailer 18
October 31, 2026
Retailer 5£675 GBP
Retailer 9£734 GBP
Retailer 6£755 GBP
Retailer 7£782 GBP
Retailer 10£782 GBP
Retailer 14£840 GBP
Retailer 3£914 GBP
Retailer 17£1,119 GBP
Retailer 2£1,188 GBP
Retailer 11£1,195 GBP
Retailer 12£1,450 GBP
Retailer 16£1,514 GBP
Retailer 13£1,546 GBP
Retailer 8£2,200 GBP
Retailer 4£2,448 GBP
Retailer 18£2,448 GBP
Retailer 15£2,668 GBP
Brilliant Earth£4,314 GBP

38 data points across 18 retailers

23 retailers£675 GBP to £4,314 GBP

A
Cheapest Retailer
-
£675 GBP
$904 USD
A
Retailer 2
-
£734 GBP
$983 USD
View
A
Retailer 3
-
£755 GBP
$1,012 USD
View
Final sale: no returns
A
Retailer 4
-
£782 GBP
$1,048 USD
View
Retailer 5
-
£782 GBP
$1,048 USD
View
Price last confirmed 14 days ago
A
Retailer 6
-
£840 GBP
View
A
Retailer 7
-
£914 GBP
$1,225 USD
View
B+
Retailer 8
-
£1,119 GBP
$1,500 USD
View
A
Retailer 9
-
£1,150 GBP
$1,541 USD
View
A
Retailer 10
-
£1,188 GBP
€1,516 EUR
View
A
Retailer 11
-
£1,195 GBP
View
A
Retailer 12
-
£1,450 GBP
A$2,989 AUD
View
A
Retailer 13
-
£1,514 GBP
ZAR 32,774 ZAR
View
A
Retailer 14
-
£1,546 GBP
$2,072 USD
View
B+
Retailer 15
-
£1,906 GBP
$2,553 USD
View
B+
Retailer 16
-
£2,017 GBP
$2,703 USD
View
B+
Retailer 17
-
£2,161 GBP
View
B+
Retailer 18
-
£2,200 GBP
$2,948 USD
View
B+
Retailer 19
-
£2,448 GBP
$3,280 USD
View
B+
Retailer 20
-
£2,448 GBP
$3,280 USD
View
B+
Retailer 21
-
£2,668 GBP
View
B+
Retailer 22
-
£2,719 GBP
$3,643 USD
View
Most Expensive
B
Brilliant Earth
10794599A · Oct 29
£4,314 GBP
$5,780 USD
View
22 more retailers have this diamond
Prices start from £675 GBPSave up to £3,639 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
6.67ct Radiant
£675 GBP