CaratHunter
Plans
Radiant|Lab Grown|IGI

6.51ct G VS1 Radiant Lab Grown Diamond

ID • G/VS1 • IGI LG617400068

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

Certificate IGI LG617400068

Diamond specifications and retailer prices

From $1,462 NZD
$824 USD
As of October 30, 2026
Save $8,545 NZD (85%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $10,007 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG617400068 or 617400068. Listed at 21 retailers as of October 30, 2026, with prices from $1,462 to $10,007, a $8,545 spread on the same certified stone. Brilliant Earth lists it at $10,007. 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
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle46.1°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG617400068
Dimensions13.04 × 9.21 × 6.25 mm
L/W Ratio1.42
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
13.04 mm9.21 mm6.51 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG617400068
Side View
Table 65.0%Crown 46.1°Girdle: MediumPavilion 35.4°Culet: NoneDepth 67.9%

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: $10,007 NZD|Low: $1,444 NZD|High: $10,007 NZD|Avg: $3,507 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
Retailer 19
Retailer 20
Retailer 21
November 2, 2026
Retailer 4$1,462 NZD
Retailer 19$1,590 NZD
Retailer 9$1,638 NZD
Retailer 6$1,696 NZD
Retailer 21$1,696 NZD
Retailer 3$1,825 NZD
Retailer 18$2,005 NZD
Retailer 7$2,596 NZD
Retailer 2$2,604 NZD
Retailer 10$2,731 NZD
Retailer 15$2,789 NZD
Retailer 16$3,143 NZD
Retailer 17$3,281 NZD
Retailer 20$3,898 NZD
Retailer 8$4,546 NZD
Retailer 5$4,768 NZD
Retailer 12$5,305 NZD
Retailer 11$5,388 NZD
Retailer 14$5,872 NZD
Retailer 13$6,357 NZD
Brilliant Earth$10,007 NZD

37 data points across 21 retailers

21 retailers$1,462 NZD to $10,007 NZD

A
Cheapest Retailer
-
$1,462 NZD
$824 USD
A
Retailer 2
-
$1,590 NZD
$896 USD
View
A
Retailer 3
-
$1,638 NZD
$923 USD
View
Final sale: no returns
A
Retailer 4
-
$1,696 NZD
$956 USD
View
Retailer 5
-
$1,696 NZD
$956 USD
View
Price last confirmed 16 days ago
Retailer 6
-
$1,825 NZD
£810 GBP
View
Price last confirmed 16 days ago
A
Retailer 7
-
$2,005 NZD
$1,130 USD
View
A
Retailer 8
-
$2,596 NZD
$1,463 USD
View
A
Retailer 9
-
$2,604 NZD
£1,156 GBP
View
B+
Retailer 10
-
$2,731 NZD
$1,539 USD
View
A
Retailer 11
-
$2,789 NZD
€1,497 EUR
View
A
Retailer 12
-
$3,143 NZD
A$2,725 AUD
View
A
Retailer 13
-
$3,281 NZD
ZAR 29,874 ZAR
View
B+
Retailer 14
-
$3,898 NZD
$2,197 USD
View
B+
Retailer 15
-
$4,546 NZD
$2,562 USD
View
B+
Retailer 16
-
$4,768 NZD
$2,687 USD
View
B+
Retailer 17
-
$5,305 NZD
$2,990 USD
View
Retailer 18
-
$5,388 NZD
$3,036 USD
View
Price last confirmed 22 days ago
B+
Retailer 19
-
$5,872 NZD
$3,309 USD
View
B+
Retailer 20
-
$6,357 NZD
£2,821 GBP
View
Most Expensive
B
Brilliant Earth
9065431A · Oct 31
$10,007 NZD
$5,640 USD
View
20 more retailers have this diamond
Prices start from $1,462 NZDSave up to $8,545 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
$1,462 NZD