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Radiant|Lab Grown|IGI

6.55ct G VS1 Radiant Lab Grown Diamond

EX • G/VS1 • IGI LG820605403

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

Certificate IGI LG820605403

Diamond specifications and retailer prices

From £1,013 GBP
HK$10,600 HKD
As of November 1, 2026
Save £2,320 GBP (70%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £3,332 GBP at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 6.55ct lab-grown radiant diamond

This 6.55ct 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 LG820605403 or 820605403. Listed at 8 retailers as of October 28, 2026, with prices from £1,013 to £3,332, a £2,320 spread on the same certified stone. Rare Carat lists it at £3,332. 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

6.55
Carat
G
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.3°
Pavilion angle34.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG820605403
Dimensions13.14 × 9.46 × 6.12 mm
L/W Ratio1.39
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.14 mm9.46 mm6.55 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG820605403
Side View
Table 67.0%Crown 43.3°Girdle: MediumPavilion 34.2°Culet: NoneDepth 64.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £3,332 GBP|Low: £974 GBP|High: £3,509 GBP|Avg: £1,996 GBP|-5.0%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 5£1,013 GBP
Retailer 2£1,319 GBP
Retailer 4£1,364 GBP
Retailer 6£1,367 GBP
Retailer 8£1,975 GBP
Retailer 3£2,898 GBP
Retailer 7£2,978 GBP
Rare Carat£3,332 GBP

41 data points across 8 retailers

8 retailers£1,013 GBP to £3,332 GBP

A
Cheapest Retailer
-
£1,013 GBP
HK$10,600 HKD
A
Retailer 2
-
£1,319 GBP
View
A
Retailer 3
-
£1,364 GBP
€1,740 EUR
View
B+
Retailer 4
-
£1,367 GBP
$1,831 USD
View
B+
Retailer 5
-
£1,975 GBP
$2,646 USD
View
B
Retailer 6
-
£2,898 GBP
View
B
Retailer 7
-
£2,978 GBP
$3,990 USD
View
Most Expensive
B
Rare Carat
KI4036054KF820 · Oct 28
£3,332 GBP
$4,465 USD
View
7 more retailers have this diamond
Prices start from £1,013 GBPSave up to £2,320 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
6.55ct Radiant
£1,013 GBP