Cushion|Lab Grown|IGI

4.09ct F VS1 Cushion Lab Grown Diamond

EX • F/VS1 • IGI LG700585208

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG700585208

Diamond specifications and retailer prices

From $1,786 AUD

$1,252 USD

As of November 2, 2026

13 retailers carry this diamond

Most expensive: $10,759 AUD at Brilliant Earth · As of October 17, 2026

View at Brilliant Earth

About this 4.09ct lab-grown cushion diamond

This 4.09ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG700585208 or 700585208. Listed at 13 retailers as of November 2, 2026. 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

4.09

Carat

Colour

VS1

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle36.6°

Pavilion angle37.6°

OriginLab Grown

Grading LabIGI

CertificateIGI LG700585208

Dimensions8.40 × 8.40 × 5.56 mm

L/W Ratio1.00

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 LG700585208

Side View

Caratlytics Score

How it works →

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: $10,759 AUD|Low: $1,380 AUD|High: $11,629 AUD|Avg: $4,175 AUD|-7.5%

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

October 16, 2026

Retailer 7$1,380 AUD

Retailer 14$1,431 AUD

Retailer 13$1,719 AUD

Retailer 4$1,861 AUD

Retailer 3$2,013 AUD

Retailer 18$2,018 AUD

Retailer 8$2,093 AUD

Retailer 2$2,473 AUD

Retailer 12$3,331 AUD

Retailer 17$3,389 AUD

Retailer 9$4,371 AUD

Retailer 6$4,469 AUD

Retailer 16$4,476 AUD

Retailer 15$4,662 AUD

Retailer 11$5,415 AUD

Retailer 10$5,628 AUD

Brilliant Earth$10,759 AUD

Retailer 5$11,501 AUD

23 data points across 18 retailers

13 retailers

Retailer 1

$1,431 AUD

$1,003 USD

Price last confirmed 21 days ago

Retailer 2

$1,786 AUD

$1,252 USD

View

Retailer 3

$2,018 AUD

$1,414 USD

View

Price last confirmed 19 days ago

Retailer 4

$2,093 AUD

$1,467 USD

View

Price last confirmed 18 days ago

Retailer 5

$2,473 AUD

£1,365 GBP

View

Price last confirmed 18 days ago

Retailer 6

$3,331 AUD

ZAR 37,715 ZAR

View

Price last confirmed 19 days ago

Retailer 7

$4,371 AUD

£2,412 GBP

View

Price last confirmed 19 days ago

Retailer 8

$4,469 AUD

$3,132 USD

View

Price last confirmed 19 days ago

Retailer 9

$4,476 AUD

$3,137 USD

View

Price last confirmed 19 days ago

Retailer 10

$4,662 AUD

View

Price last confirmed 25 days ago

Retailer 11

$5,415 AUD

£2,988 GBP

View

Price last confirmed 18 days ago

Retailer 12

$5,628 AUD

$3,944 USD

View

Price last confirmed 18 days ago

Most Expensive

Brilliant Earth

18873985A · Oct 17

$10,759 AUD

$7,540 USD

View

Price last confirmed 16 days ago

12 more retailers have this diamond

Prices start from $1,786 AUD

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.

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4.09ct Cushion

$1,786 AUD