Cushion|Lab Grown|IGI

1.09ct F VS1 Cushion Lab Grown Diamond

ID • F/VS1 • IGI LG831608891

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG831608891

Diamond specifications and retailer prices

From £162 GBP

HK$1,700 HKD

As of November 1, 2026

Save £529 GBP (77%) vs most expensive(unlock to see where)

15 retailers carry this diamond

Most expensive: £794 GBP at Reve Diamonds · As of October 25, 2026

View at Reve Diamonds

About this 1.09ct lab-grown cushion diamond

This 1.09ct lab-grown cushion sits in the classic one-carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG831608891 or 831608891. Listed at 15 retailers as of October 26, 2026, with a 326% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09

Carat

Colour

VS1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishVery Good

SymmetryVery Good

FluorescenceNone

Crown angle37.6°

Pavilion angle31.9°

OriginLab Grown

Grading LabIGI

CertificateIGI LG831608891

Dimensions6.84 × 5.00 × 3.50 mm

L/W Ratio1.37

Girdle conditionFaceted

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

CutIdeal

PolishVery Good

SymmetryVery Good

FluorescenceNone

CertificateIGI LG831608891

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 1

Current: £246 GBP|Low: £133 GBP|High: £798 GBP|Avg: £360 GBP|+0.6%

Retailer 1

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

Reve Diamonds

October 31, 2026

Retailer 6£133 GBP

Retailer 12£162 GBP

Retailer 3£177 GBP

Retailer 1£246 GBP

Retailer 2£249 GBP

Retailer 14£258 GBP

Retailer 4£268 GBP

Retailer 5£268 GBP

Retailer 16£317 GBP

Retailer 9£379 GBP

Retailer 8£395 GBP

Retailer 13£401 GBP

Retailer 10£447 GBP

Retailer 11£473 GBP

Retailer 7£515 GBP

Retailer 15£691 GBP

Reve Diamonds£794 GBP

43 data points across 17 retailers

15 retailers£162 GBP to £691 GBP

Cheapest Retailer

£162 GBP

HK$1,700 HKD

Retailer 2

£246 GBP

€315 EUR

View

Retailer 3

£249 GBP

ZAR 5,408 ZAR

View

Price last confirmed 10 days ago

Retailer 4

£258 GBP

View

Retailer 5

£268 GBP

$359 USD

View

Price last confirmed 8 days ago

Retailer 6

£268 GBP

$359 USD

View

Retailer 7

£317 GBP

View

Price last confirmed 7 days ago

B+

Retailer 8

£379 GBP

$509 USD

View

Retailer 9

£395 GBP

$530 USD

View

Price last confirmed 14 days ago

B+

Retailer 10

£401 GBP

SGD 727 SGD

View

B+

Retailer 11

£447 GBP

$600 USD

View

Retailer 12

£473 GBP

$635 USD

View

Retailer 13

£515 GBP

$692 USD

View

Retailer 14

£691 GBP

View

Most Expensive

Reve Diamonds

2BBB31FC1 · Oct 25

£794 GBP

$1,065 USD

View

Price last confirmed 8 days ago

14 more retailers have this diamond

Prices start from £162 GBPSave up to £529 GBP

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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