Cushion|Lab Grown|IGI

6.58ct F VS1 Cushion Lab Grown Diamond

EX • F/VS1 • IGI LG710502173

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG710502173

Diamond specifications and retailer prices

From $3,521 NZD

$1,981 USD

As of November 2, 2026

Save $18,642 NZD (84%) vs most expensive(unlock to see where)

18 retailers carry this diamond

Most expensive: $22,163 NZD at Brilliant Earth · As of October 29, 2026

View at Brilliant Earth

About this 6.58ct lab-grown cushion diamond

This 6.58ct lab-grown cushion sits in the over five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG710502173 or 710502173. Listed at 18 retailers as of October 29, 2026, with prices from $3,521 to $22,163, a $18,642 spread on the same certified stone. Brilliant Earth lists it at $22,163. 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

6.58

Carat

Colour

VS1

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle40.5°

Pavilion angle35.7°

OriginLab Grown

Grading LabIGI

CertificateIGI LG710502173

Dimensions11.98 × 9.56 × 6.51 mm

L/W Ratio1.25

Girdle conditionFaceted

Culet sizePointed

Cert comments

This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG710502173

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: $22,163 NZD|Low: $2,829 NZD|High: $22,856 NZD|Avg: $6,619 NZD|-3.0%

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

October 30, 2026

Retailer 4$2,829 NZD

Retailer 11$2,931 NZD

Retailer 10$3,235 NZD

Retailer 2$3,521 NZD

Retailer 13$4,122 NZD

Retailer 6$4,555 NZD

Retailer 9$6,005 NZD

Retailer 8$6,202 NZD

Retailer 5$7,801 NZD

Retailer 3$7,898 NZD

Retailer 12$9,213 NZD

Retailer 7$9,252 NZD

Brilliant Earth$22,163 NZD

39 data points across 13 retailers

18 retailers$3,521 NZD to $22,163 NZD

Retailer 1

$2,931 NZD

$1,649 USD

Price last confirmed 21 days ago

Retailer 2

$3,235 NZD

$1,820 USD

View

Price last confirmed 5 days ago

Retailer 3

$3,521 NZD

$1,981 USD

View

Retailer 4

$3,704 NZD

$2,084 USD

View

Retailer 5

$4,122 NZD

$2,319 USD

View

Price last confirmed 7 days ago

Retailer 6

$4,186 NZD

$2,355 USD

View

Retailer 7

$4,555 NZD

£2,018 GBP

View

Retailer 8

$6,005 NZD

A$5,198 AUD

View

Price last confirmed 11 days ago

Retailer 9

$6,202 NZD

ZAR 56,378 ZAR

View

Price last confirmed 9 days ago

Retailer 10

$7,801 NZD

£3,456 GBP

View

Retailer 11

$7,898 NZD

$4,444 USD

View

Retailer 12

$8,535 NZD

$4,802 USD

View

Retailer 13

$9,213 NZD

A$7,975 AUD

View

Price last confirmed 28 days ago

Retailer 14

$9,252 NZD

£4,099 GBP

View

Retailer 15

$11,415 NZD

$6,422 USD

View

Retailer 16

$17,382 NZD

$9,780 USD

View

Retailer 17

$18,448 NZD

$10,380 USD

View

Most Expensive

Brilliant Earth

18873951A · Oct 29

$22,163 NZD

$12,470 USD

View

17 more retailers have this diamond

Prices start from $3,521 NZDSave up to $18,642 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

6.58ct Cushion

$3,521 NZD