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Radiant|Lab Grown|IGI

6.61ct G VS1 Radiant Lab Grown Diamond

ID • G/VS1 • IGI LG592319644

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

Certificate IGI LG592319644

Diamond specifications and retailer prices

From £699 GBP
$936 USD
As of October 31, 2026
Save £3,578 GBP (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £4,276 GBP at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 6.61ct lab-grown radiant diamond

This 6.61ct 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 LG592319644 or 592319644. Listed at 18 retailers as of October 31, 2026, with prices from £699 to £4,276, a £3,578 spread on the same certified stone. Brilliant Earth lists it at £4,276. 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

6.61
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.8°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG592319644
Dimensions13.38 × 9.15 × 6.26 mm
L/W Ratio1.46
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
13.38 mm9.15 mm6.61 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG592319644
Side View
Table 65.0%Crown 45.8°Girdle: MediumPavilion 35.7°Culet: NoneDepth 68.4%

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: £4,276 GBP|Low: £690 GBP|High: £4,276 GBP|Avg: £1,706 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 4£699 GBP
Retailer 9£715 GBP
Retailer 13£855 GBP
Retailer 10£1,103 GBP
Retailer 17£1,105 GBP
Retailer 6£1,166 GBP
Retailer 2£1,191 GBP
Retailer 11£1,341 GBP
Retailer 12£1,401 GBP
Retailer 15£1,664 GBP
Retailer 16£1,968 GBP
Retailer 3£2,265 GBP
Retailer 7£2,286 GBP
Retailer 5£2,508 GBP
Retailer 8£2,569 GBP
Retailer 14£2,728 GBP
Brilliant Earth£4,276 GBP

39 data points across 17 retailers

18 retailers£699 GBP to £4,276 GBP

Retailer 1
-
£671 GBP
$899 USD
Price last confirmed 34 days ago
A
Retailer 2
-
£699 GBP
$936 USD
View
Final sale: no returns
Retailer 3
-
£705 GBP
$945 USD
View
Price last confirmed 34 days ago
A
Retailer 4
-
£855 GBP
$1,145 USD
View
A
Retailer 5
-
£1,103 GBP
View
A
Retailer 6
-
£1,105 GBP
$1,481 USD
View
B+
Retailer 7
-
£1,166 GBP
$1,562 USD
View
A
Retailer 8
-
£1,191 GBP
€1,520 EUR
View
A
Retailer 9
-
£1,341 GBP
A$2,765 AUD
View
A
Retailer 10
-
£1,401 GBP
ZAR 30,318 ZAR
View
A
Retailer 11
-
£1,664 GBP
$2,230 USD
View
B+
Retailer 12
-
£1,968 GBP
$2,637 USD
View
B+
Retailer 13
-
£2,265 GBP
$3,035 USD
View
Retailer 14
-
£2,286 GBP
View
Price last confirmed 20 days ago
B+
Retailer 15
-
£2,508 GBP
$3,360 USD
View
Retailer 16
-
£2,569 GBP
$3,442 USD
View
Price last confirmed 21 days ago
B+
Retailer 17
-
£2,728 GBP
View
Most Expensive
B
Brilliant Earth
7810756A · Oct 31
£4,276 GBP
$5,730 USD
View
17 more retailers have this diamond
Prices start from £699 GBPSave up to £3,578 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
6.61ct Radiant
£699 GBP