Radiant|Lab Grown|IGI

6.57ct G VS1 Radiant Lab Grown Diamond

EX • G/VS1 • IGI LG618416602

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

Certificate IGI LG618416602

Diamond specifications and retailer prices

From $2,750 NZD

$1,550 USD

As of November 2, 2026

Save $5,107 NZD (65%) vs most expensive(unlock to see where)

15 retailers carry this diamond

Most expensive: $7,857 NZD at MOH London · As of November 1, 2026

View at MOH London

About this 6.57ct lab-grown radiant diamond

This 6.57ct 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 LG618416602 or 618416602. Listed at 15 retailers as of November 1, 2026, with prices from $2,750 to $7,857, a $5,107 spread on the same certified stone. MOH London lists it at $7,857. 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

6.57

Carat

Colour

VS1

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle43.3°

Pavilion angle35.1°

OriginLab Grown

Grading LabIGI

CertificateIGI LG618416602

Dimensions13.08 × 9.33 × 6.19 mm

L/W Ratio1.40

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

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG618416602

Side View

Caratlytics Score

How it works →

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: Nov 2

Current: $7,857 NZD|Low: $2,750 NZD|High: $7,963 NZD|Avg: $5,063 NZD

MOH London

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

November 2, 2026

Retailer 4$2,750 NZD

Retailer 2$3,548 NZD

Retailer 7$3,882 NZD

Retailer 3$4,531 NZD

Retailer 5$4,732 NZD

Retailer 8$5,895 NZD

Retailer 6$7,019 NZD

MOH London$7,857 NZD

42 data points across 8 retailers

15 retailers$2,750 NZD to $7,857 NZD

Retailer 1

$2,108 NZD

$1,188 USD

Price last confirmed 24 days ago

Retailer 2

$2,294 NZD

$1,293 USD

View

Price last confirmed 35 days ago

Retailer 3

$2,445 NZD

$1,378 USD

View

Price last confirmed 29 days ago

Retailer 4

$2,445 NZD

$1,378 USD

View

Price last confirmed 22 days ago

Retailer 5

$2,750 NZD

$1,550 USD

View

Retailer 6

$3,548 NZD

£1,575 GBP

View

B+

Retailer 7

$3,882 NZD

$2,188 USD

View

B+

Retailer 8

$4,531 NZD

A$3,929 AUD

View

Retailer 9

$4,583 NZD

$2,583 USD

View

Price last confirmed 32 days ago

B+

Retailer 10

$4,684 NZD

$2,640 USD

View

B+

Retailer 11

$4,732 NZD

ZAR 43,086 ZAR

View

B+

Retailer 12

$4,840 NZD

$2,728 USD

View

B+

Retailer 13

$5,895 NZD

£2,616 GBP

View

Retailer 14

$7,019 NZD

$3,956 USD

View

Most Expensive

MOH London

LG618416602 · Nov 1

$7,857 NZD

£3,487 GBP

View

14 more retailers have this diamond

Prices start from $2,750 NZDSave up to $5,107 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.

Similar diamonds

6.57ct Radiant

$2,750 NZD