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Radiant|Lab Grown|IGI

6.18ct G VS1 Radiant Lab Grown Diamond

ID • G/VS1 • IGI LG574364390

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

Certificate IGI LG574364390

Diamond specifications and retailer prices

From $1,928 NZD
$1,085 USD
As of November 2, 2026
Save $8,131 NZD (81%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $10,060 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 6.18ct lab-grown radiant diamond

This 6.18ct 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 LG574364390 or 574364390. Listed at 16 retailers as of October 31, 2026, with prices from $1,928 to $10,060, a $8,131 spread on the same certified stone. Brilliant Earth lists it at $10,060. 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

6.18
Carat
G
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44°
Pavilion angle35.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG574364390
Dimensions13.11 × 8.92 × 6.08 mm
L/W Ratio1.47
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
13.11 mm8.92 mm6.18 ctG / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG574364390
Side View
Table 64.5%Crown 44°Girdle: MediumPavilion 35.2°Culet: NoneDepth 68.2%

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: $10,060 NZD|Low: $1,541 NZD|High: $10,379 NZD|Avg: $3,906 NZD|-2.9%
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
November 2, 2026
Retailer 6$1,557 NZD
Retailer 8$1,596 NZD
Retailer 13$1,928 NZD
Retailer 2$2,477 NZD
Retailer 16$2,499 NZD
Retailer 5$2,609 NZD
Retailer 10$2,656 NZD
Retailer 11$2,993 NZD
Retailer 12$3,126 NZD
Retailer 14$3,843 NZD
Retailer 15$4,132 NZD
Retailer 3$5,460 NZD
Retailer 4$5,583 NZD
Retailer 7$5,791 NZD
Retailer 9$6,056 NZD
Brilliant Earth$10,060 NZD

39 data points across 16 retailers

16 retailers$1,928 NZD to $10,060 NZD

Retailer 1
-
$1,496 NZD
$842 USD
Price last confirmed 36 days ago
Retailer 2
-
$1,575 NZD
$886 USD
View
Price last confirmed 36 days ago
A
Retailer 3
-
$1,928 NZD
$1,085 USD
View
A
Retailer 4
-
$2,477 NZD
£1,097 GBP
View
A
Retailer 5
-
$2,499 NZD
$1,406 USD
View
B+
Retailer 6
-
$2,609 NZD
$1,468 USD
View
A
Retailer 7
-
$2,656 NZD
€1,423 EUR
View
A
Retailer 8
-
$2,993 NZD
A$2,591 AUD
View
A
Retailer 9
-
$3,126 NZD
ZAR 28,411 ZAR
View
B+
Retailer 10
-
$3,843 NZD
$2,162 USD
View
B+
Retailer 11
-
$4,132 NZD
$2,325 USD
View
B+
Retailer 12
-
$5,460 NZD
$3,072 USD
View
B+
Retailer 13
-
$5,583 NZD
$3,141 USD
View
Retailer 14
-
$5,791 NZD
$3,258 USD
View
Price last confirmed 23 days ago
B+
Retailer 15
-
$6,056 NZD
£2,683 GBP
View
Most Expensive
B
Brilliant Earth
7623653A · Oct 31
$10,060 NZD
$5,660 USD
View
15 more retailers have this diamond
Prices start from $1,928 NZDSave up to $8,131 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
6.18ct Radiant
$1,928 NZD