Cushion|Lab Grown|IGI

1.77ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG836608009

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG836608009

Diamond specifications and retailer prices

From £528 GBP

$707 USD

As of October 30, 2026

Save £2,219 GBP (81%) vs most expensive(unlock to see where)

20 retailers carry this diamond

Most expensive: £2,746 GBP at Brilliant Earth · As of October 30, 2026

View at Brilliant Earth

About this 1.77ct lab-grown cushion diamond

This 1.77ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836608009 or 836608009. Listed at 20 retailers as of October 30, 2026, with prices from £528 to £2,746, a £2,219 spread on the same certified stone. Brilliant Earth lists it at £2,746. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.77

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.4°

Pavilion angle37.6°

OriginLab Grown

Grading LabIGI

CertificateIGI LG836608009

Dimensions6.84 × 6.82 × 4.51 mm

L/W Ratio1.00

Girdle conditionFaceted

Cert comments

As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG836608009

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: Oct 30

Current: £2,746 GBP|Low: £528 GBP|High: £4,239 GBP|Avg: £1,444 GBP|-35.2%

Brilliant Earth

Retailer 2

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October 31, 2026

Retailer 4£528 GBP

Retailer 11£567 GBP

Retailer 16£571 GBP

Retailer 13£638 GBP

Retailer 7£705 GBP

Retailer 8£827 GBP

Retailer 17£841 GBP

Retailer 2£922 GBP

Retailer 19£925 GBP

Retailer 20£1,074 GBP

Retailer 14£1,211 GBP

Retailer 6£1,570 GBP

Retailer 3£1,743 GBP

Retailer 15£1,833 GBP

Retailer 9£1,914 GBP

Retailer 5£2,017 GBP

Retailer 10£2,243 GBP

Retailer 18£2,350 GBP

Retailer 12£2,547 GBP

Brilliant Earth£2,746 GBP

25 data points across 20 retailers

20 retailers£528 GBP to £2,746 GBP

Cheapest Retailer

£528 GBP

$707 USD

Final sale: no returns

Retailer 2

£567 GBP

$760 USD

View

Price last confirmed 16 days ago

Retailer 3

£571 GBP

View

Retailer 4

£638 GBP

$855 USD

View

Retailer 5

£705 GBP

$944 USD

View

Retailer 6

£827 GBP

$1,108 USD

View

Retailer 7

£841 GBP

View

Retailer 8

£922 GBP

€1,176 EUR

View

Retailer 9

£925 GBP

ZAR 20,029 ZAR

View

Retailer 10

£1,074 GBP

$1,439 USD

View

Retailer 11

£1,211 GBP

$1,623 USD

View

B+

Retailer 12

£1,570 GBP

View

B+

Retailer 13

£1,743 GBP

$2,336 USD

View

B+

Retailer 14

£1,833 GBP

$2,456 USD

View

B+

Retailer 15

£1,914 GBP

SGD 3,466 SGD

View

B+

Retailer 16

£2,017 GBP

$2,703 USD

View

Retailer 17

£2,243 GBP

$3,005 USD

View

Price last confirmed 11 days ago

Retailer 18

£2,350 GBP

View

Retailer 19

£2,547 GBP

$3,413 USD

View

Most Expensive

Brilliant Earth

21695330A · Oct 30

£2,746 GBP

$3,680 USD

View

19 more retailers have this diamond

Prices start from £528 GBPSave up to £2,219 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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