Radiant|Lab Grown|IGI

6.56ct G VS1 Radiant Lab Grown Diamond

ID • G/VS1 • IGI LG585398307

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

Certificate IGI LG585398307

Diamond specifications and retailer prices

From $1,140 USD
As of October 31, 2026
Save $4,540 USD (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $5,680 USD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 6.56ct lab-grown radiant diamond

This 6.56ct 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 LG585398307 or 585398307. Listed at 18 retailers as of October 31, 2026, with prices from $1,140 to $5,680, a $4,540 spread on the same certified stone. Brilliant Earth lists it at $5,680. 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

6.56
Carat
G
Color
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.5°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG585398307
Dimensions13.06 × 9.23 × 6.31 mm
L/W Ratio1.41
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
13.06 mm9.23 mm6.56 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG585398307
Side View
Table 66.0%Crown 41.5°Girdle: MED-STKPavilion 35.2°Culet: NoneDepth 68.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: $5,680 USD|Low: $918 USD|High: $5,680 USD|Avg: $2,393 USD
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
Retailer 18
November 1, 2026
Retailer 7$930 USD
Retailer 10$951 USD
Retailer 15$1,140 USD
Retailer 11$1,467 USD
Retailer 3$1,472 USD
Retailer 6$1,551 USD
Retailer 12$1,583 USD
Retailer 13$1,784 USD
Retailer 14$1,863 USD
Retailer 16$2,213 USD
Retailer 18$2,599 USD
Retailer 4$3,013 USD
Retailer 8$3,048 USD
Retailer 5$3,335 USD
Retailer 9$3,421 USD
Retailer 2$3,609 USD
Retailer 17$4,330 USD
Brilliant Earth$5,680 USD

38 data points across 18 retailers

18 retailers$1,140 USD to $5,680 USD

Retailer 1
-
$892 USD
Price last confirmed 35 days ago
Retailer 2
-
$938 USD
View
Price last confirmed 35 days ago
A
Retailer 3
-
$1,140 USD
View
A
Retailer 4
-
$1,467 USD
£1,155 GBP
View
A
Retailer 5
-
$1,472 USD
View
B+
Retailer 6
-
$1,551 USD
View
A
Retailer 7
-
$1,583 USD
€1,508 EUR
View
A
Retailer 8
-
$1,784 USD
A$2,745 AUD
View
A
Retailer 9
-
$1,863 USD
ZAR 30,096 ZAR
View
A
Retailer 10
-
$2,213 USD
View
B+
Retailer 11
-
$2,599 USD
View
B+
Retailer 12
-
$3,013 USD
View
Retailer 13
-
$3,048 USD
£2,400 GBP
View
Price last confirmed 21 days ago
B+
Retailer 14
-
$3,335 USD
View
Retailer 15
-
$3,421 USD
View
Price last confirmed 21 days ago
B+
Retailer 16
-
$3,609 USD
£2,842 GBP
View
B
Retailer 17
-
$4,330 USD
View
Most Expensive
B
Brilliant Earth
7628194A · Oct 31
$5,680 USD
View
17 more retailers have this diamond
Prices start from $1,140 USDSave up to $4,540 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
6.56ct Radiant
$1,140 USD