Radiant|Lab Grown|IGI

6.64ct G VVS2 Radiant Lab Grown Diamond

ID • G/VVS2 • IGI LG799604385

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

Certificate IGI LG799604385

Diamond specifications and retailer prices

From £682 GBP
$914 USD
As of October 31, 2026
Save £249 GBP (27%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: £6,717 GBP at Helzberg Diamonds · As of October 11, 2026
View at Helzberg Diamonds

About this 6.64ct lab-grown radiant diamond

This 6.64ct lab-grown radiant sits in the over five carat band, graded G colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG799604385 or 799604385. Listed at 4 retailers as of October 30, 2026, with a 37% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

6.64
Carat
G
Colour
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.8°
Pavilion angle34.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG799604385
Dimensions13.44 × 9.24 × 6.08 mm
L/W Ratio1.45
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.44 mm9.24 mm6.64 ctG / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG799604385
Side View
Table 65.0%Crown 46.8°Girdle: MediumPavilion 34.5°Culet: NoneDepth 65.8%

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: £6,717 GBP|Low: £682 GBP|High: £6,717 GBP|Avg: £2,851 GBP
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 28, 2026
Retailer 2£682 GBP
Retailer 3£931 GBP
Retailer 4£1,065 GBP
Retailer 9£1,201 GBP
Retailer 8£2,299 GBP
Retailer 6£3,047 GBP
Retailer 7£4,321 GBP
Retailer 5£4,799 GBP
Helzberg Diamonds£6,717 GBP

23 data points across 9 retailers

4 retailers£682 GBP to £931 GBP

A
Cheapest Retailer
-
£682 GBP
$914 USD
Final sale: no returns
B+
Retailer 2
-
£931 GBP
$1,248 USD
View
Retailer 3
-
£4,799 GBP
$6,430 USD
View
Price last confirmed 19 days ago
Most Expensive
Helzberg Diamonds
ZXZNPPMGKJOL · Oct 11
£6,717 GBP
$9,000 USD
View
Price last confirmed 20 days ago
3 more retailers have this diamond
Prices start from £682 GBPSave up to £249 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
6.64ct Radiant
£682 GBP