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 $1,357 USD
HK$10,600 HKD
As of November 1, 2026
Save $3,108 USD (70%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $4,465 USD 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 $1,357 to $4,465, a $3,108 spread on the same certified stone. Rare Carat lists it at $4,465. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $4,465 USD|Low: $1,306 USD|High: $4,701 USD|Avg: $2,674 USD|-5.0%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 5$1,357 USD
Retailer 2$1,767 USD
Retailer 4$1,827 USD
Retailer 6$1,831 USD
Retailer 8$2,646 USD
Retailer 3$3,884 USD
Retailer 7$3,990 USD
Rare Carat$4,465 USD

41 data points across 8 retailers

8 retailers$1,357 USD to $4,465 USD

A
Cheapest Retailer
-
$1,357 USD
HK$10,600 HKD
A
Retailer 2
-
$1,767 USD
£1,391 GBP
View
A
Retailer 3
-
$1,827 USD
€1,740 EUR
View
B+
Retailer 4
-
$1,831 USD
View
B+
Retailer 5
-
$2,646 USD
View
B
Retailer 6
-
$3,884 USD
£3,058 GBP
View
B
Retailer 7
-
$3,990 USD
View
Most Expensive
B
Rare Carat
KI4036054KF820 · Oct 28
$4,465 USD
View
7 more retailers have this diamond
Prices start from $1,357 USDSave up to $3,108 USD

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
$1,357 USD