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Radiant|Lab Grown|IGI

6.51ct G VVS2 Radiant Lab Grown Diamond

ID • G/VVS2 • IGI LG641475551

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

Certificate IGI LG641475551

Diamond specifications and retailer prices

From $2,315 NZD
$1,305 USD
As of October 30, 2026
Save $15,499 NZD (87%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $17,814 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 6.51ct lab-grown radiant diamond

This 6.51ct lab-grown radiant sits in the over five carat band, graded G colour (near-colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG641475551 or 641475551. Listed at 24 retailers as of October 30, 2026, with prices from $2,315 to $17,814, a $15,499 spread on the same certified stone. Brilliant Earth lists it at $17,814. 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

6.51
Carat
G
Colour
VVS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43.6°
Pavilion angle30.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG641475551
Dimensions13.53 × 9.04 × 5.75 mm
L/W Ratio1.50
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
13.53 mm9.04 mm6.51 ctG / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG641475551
Side View
Table 66.0%Crown 43.6°Girdle: MediumPavilion 30.1°Culet: NoneDepth 63.6%

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: Oct 30
Current: $17,814 NZD|Low: $2,223 NZD|High: $17,814 NZD|Avg: $5,637 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 1, 2026
Retailer 3$2,315 NZD
Retailer 18$2,520 NZD
Retailer 6$2,686 NZD
Retailer 16$2,686 NZD
Retailer 12$2,829 NZD
Retailer 9$2,990 NZD
Retailer 13$3,787 NZD
Retailer 15$3,959 NZD
Retailer 8$4,249 NZD
Retailer 14$4,978 NZD
Retailer 7$5,007 NZD
Retailer 17$5,035 NZD
Retailer 5$5,150 NZD
Retailer 4$6,879 NZD
Retailer 10$7,986 NZD
Retailer 11$8,633 NZD
Retailer 2$10,593 NZD
Brilliant Earth$17,814 NZD

34 data points across 18 retailers

24 retailers$2,315 NZD to $17,814 NZD

A
Cheapest Retailer
-
$2,315 NZD
$1,305 USD
A
Retailer 2
-
$2,520 NZD
$1,420 USD
View
A
Retailer 3
-
$2,594 NZD
$1,462 USD
View
Final sale: no returns
A
Retailer 4
-
$2,686 NZD
$1,514 USD
View
Retailer 5
-
$2,686 NZD
$1,514 USD
View
Price last confirmed 20 days ago
A
Retailer 6
-
$2,829 NZD
£1,256 GBP
View
A
Retailer 7
-
$2,884 NZD
HK$12,700 HKD
View
A
Retailer 8
-
$2,990 NZD
$1,685 USD
View
A
Retailer 9
-
$3,337 NZD
$1,881 USD
View
A
Retailer 10
-
$3,787 NZD
£1,681 GBP
View
A
Retailer 11
-
$3,959 NZD
€2,125 EUR
View
B+
Retailer 12
-
$4,249 NZD
$2,395 USD
View
B+
Retailer 13
-
$4,978 NZD
A$4,316 AUD
View
B+
Retailer 14
-
$5,007 NZD
$2,822 USD
View
B+
Retailer 15
-
$5,035 NZD
$2,838 USD
View
Retailer 16
-
$5,150 NZD
ZAR 46,892 ZAR
View
Price last confirmed 18 days ago
Retailer 17
-
$6,490 NZD
£2,880 GBP
View
Price last confirmed 16 days ago
B+
Retailer 18
-
$6,879 NZD
$3,877 USD
View
B
Retailer 19
-
$7,986 NZD
$4,501 USD
View
B
Retailer 20
-
$8,318 NZD
SGD 6,335 SGD
View
B+
Retailer 21
-
$8,633 NZD
£3,831 GBP
View
B
Retailer 22
-
$9,434 NZD
$5,317 USD
View
B
Retailer 23
-
$10,593 NZD
$5,970 USD
View
Most Expensive
B
Brilliant Earth
10715889A · Oct 31
$17,814 NZD
$10,040 USD
View
23 more retailers have this diamond
Prices start from $2,315 NZDSave up to $15,499 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
6.51ct Radiant
$2,315 NZD