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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 $2,023 NZD
$1,140 USD
As of November 2, 2026
Save $8,055 NZD (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $10,078 NZD 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 $2,023 to $10,078, a $8,055 spread on the same certified stone. Brilliant Earth lists it at $10,078. 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
Colour
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

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 2
Current: $10,078 NZD|Low: $1,629 NZD|High: $10,078 NZD|Avg: $4,273 NZD
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
Retailer 16
Retailer 17
Retailer 18
November 2, 2026
Retailer 7$1,650 NZD
Retailer 10$1,687 NZD
Retailer 15$2,023 NZD
Retailer 3$2,612 NZD
Retailer 2$2,624 NZD
Retailer 6$2,752 NZD
Retailer 12$2,809 NZD
Retailer 13$3,166 NZD
Retailer 14$3,305 NZD
Retailer 16$3,927 NZD
Retailer 18$4,611 NZD
Retailer 4$5,346 NZD
Retailer 8$5,408 NZD
Retailer 5$5,917 NZD
Retailer 9$6,070 NZD
Retailer 11$6,404 NZD
Retailer 17$7,683 NZD
Brilliant Earth$10,078 NZD

39 data points across 18 retailers

18 retailers$2,023 NZD to $10,078 NZD

Retailer 1
-
$1,583 NZD
$892 USD
Price last confirmed 35 days ago
Retailer 2
-
$1,664 NZD
$938 USD
View
Price last confirmed 35 days ago
A
Retailer 3
-
$2,023 NZD
$1,140 USD
View
A
Retailer 4
-
$2,612 NZD
$1,472 USD
View
A
Retailer 5
-
$2,624 NZD
£1,164 GBP
View
B+
Retailer 6
-
$2,752 NZD
$1,551 USD
View
A
Retailer 7
-
$2,809 NZD
€1,508 EUR
View
A
Retailer 8
-
$3,166 NZD
A$2,745 AUD
View
A
Retailer 9
-
$3,305 NZD
ZAR 30,096 ZAR
View
A
Retailer 10
-
$3,927 NZD
$2,213 USD
View
B+
Retailer 11
-
$4,611 NZD
$2,599 USD
View
B+
Retailer 12
-
$5,346 NZD
$3,013 USD
View
Retailer 13
-
$5,408 NZD
£2,400 GBP
View
Price last confirmed 21 days ago
B+
Retailer 14
-
$5,917 NZD
$3,335 USD
View
Retailer 15
-
$6,070 NZD
$3,421 USD
View
Price last confirmed 22 days ago
B+
Retailer 16
-
$6,404 NZD
£2,842 GBP
View
B
Retailer 17
-
$7,683 NZD
$4,330 USD
View
Most Expensive
B
Brilliant Earth
7628194A · Oct 31
$10,078 NZD
$5,680 USD
View
17 more retailers have this diamond
Prices start from $2,023 NZDSave up to $8,055 NZD

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
$2,023 NZD