Radiant|Lab Grown|IGI

6.57ct G VS1 Radiant Lab Grown Diamond

EX • G/VS1 • IGI LG618416602

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

Certificate IGI LG618416602

Diamond specifications and retailer prices

From $1,550 USD
As of October 31, 2026
Save $2,903 USD (65%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $4,453 USD at MOH London · As of October 29, 2026
View at MOH London

About this 6.57ct lab-grown radiant diamond

This 6.57ct 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 LG618416602 or 618416602. Listed at 15 retailers as of October 29, 2026, with prices from $1,550 to $4,453, a $2,903 spread on the same certified stone. MOH London lists it at $4,453. 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

6.57
Carat
G
Color
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.3°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG618416602
Dimensions13.08 × 9.33 × 6.19 mm
L/W Ratio1.40
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
13.08 mm9.33 mm6.57 ctG / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG618416602
Side View
Table 63.0%Crown 43.3°Girdle: MediumPavilion 35.1°Culet: NoneDepth 66.3%

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: $4,453 USD|Low: $1,550 USD|High: $4,488 USD|Avg: $2,885 USD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 4$1,550 USD
Retailer 2$2,000 USD
Retailer 7$2,188 USD
Retailer 3$2,554 USD
Retailer 5$2,667 USD
Retailer 9$2,728 USD
Retailer 8$3,322 USD
Retailer 6$3,956 USD
MOH London$4,453 USD

42 data points across 9 retailers

15 retailers$1,550 USD to $4,453 USD

Retailer 1
-
$1,188 USD
Price last confirmed 23 days ago
Retailer 2
-
$1,293 USD
View
Price last confirmed 34 days ago
Retailer 3
-
$1,378 USD
View
Price last confirmed 28 days ago
Retailer 4
-
$1,378 USD
View
Price last confirmed 21 days ago
A
Retailer 5
-
$1,550 USD
View
A
Retailer 6
-
$2,000 USD
£1,575 GBP
View
B+
Retailer 7
-
$2,188 USD
View
B+
Retailer 8
-
$2,554 USD
A$3,929 AUD
View
Retailer 9
-
$2,583 USD
View
Price last confirmed 31 days ago
B+
Retailer 10
-
$2,640 USD
View
B+
Retailer 11
-
$2,667 USD
ZAR 43,086 ZAR
View
B+
Retailer 12
-
$2,728 USD
View
B+
Retailer 13
-
$3,322 USD
£2,616 GBP
View
B
Retailer 14
-
$3,956 USD
View
Most Expensive
B
MOH London
LG618416602 · Oct 29
$4,453 USD
£3,506 GBP
View
14 more retailers have this diamond
Prices start from $1,550 USDSave up to $2,903 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
6.57ct Radiant
$1,550 USD