Cushion|Lab Grown|IGI

3.57ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG681578434

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

Certificate IGI LG681578434

Diamond specifications and retailer prices

From £1,700 GBP

HK$17,800 HKD

As of October 31, 2026

Save £3,815 GBP (69%) vs most expensive(unlock to see where)

19 retailers carry this diamond

Most expensive: £7,269 GBP at Do Amore Diamonds · As of October 23, 2026

View at Do Amore Diamonds

About this 3.57ct lab-grown cushion diamond

This 3.57ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG681578434 or 681578434. Listed at 19 retailers as of October 30, 2026, with a 224% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

3.57

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle37°

Pavilion angle39.4°

OriginLab Grown

Grading LabIGI

CertificateIGI LG681578434

Dimensions8.94 × 8.92 × 5.90 mm

L/W Ratio1.00

Girdle conditionFaceted

Culet sizePointed

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 LG681578434

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 31

Current: £7,269 GBP|Low: £1,183 GBP|High: £8,754 GBP|Avg: £3,587 GBP|-11.3%

Do Amore Diamonds

Retailer 2

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Retailer 20

October 30, 2026

Retailer 16£1,299 GBP

Retailer 14£1,359 GBP

Retailer 7£1,404 GBP

Retailer 8£1,700 GBP

Retailer 15£1,943 GBP

Retailer 5£2,036 GBP

Retailer 19£2,133 GBP

Retailer 20£2,524 GBP

Retailer 13£3,059 GBP

Retailer 17£3,106 GBP

Retailer 11£3,264 GBP

Retailer 9£3,517 GBP

Retailer 6£3,743 GBP

Retailer 3£3,882 GBP

Retailer 18£4,131 GBP

Retailer 12£4,772 GBP

Retailer 10£4,909 GBP

Retailer 2£5,515 GBP

Retailer 4£7,071 GBP

Do Amore Diamonds£7,269 GBP

31 data points across 20 retailers

19 retailers£1,700 GBP to £5,515 GBP

Retailer 1

£1,299 GBP

$1,740 USD

Price last confirmed 8 days ago

Retailer 2

£1,404 GBP

$1,881 USD

View

Price last confirmed 9 days ago

Retailer 3

£1,700 GBP

HK$17,800 HKD

View

Retailer 4

£1,943 GBP

View

Price last confirmed 9 days ago

Retailer 5

£1,963 GBP

View

Price last confirmed 16 days ago

Retailer 6

£2,036 GBP

$2,728 USD

View

Price last confirmed 13 days ago

Retailer 7

£2,524 GBP

$3,382 USD

View

Price last confirmed 7 days ago

Retailer 8

£3,059 GBP

A$6,305 AUD

View

Price last confirmed 9 days ago

Retailer 9

£3,106 GBP

ZAR 67,225 ZAR

View

Price last confirmed 11 days ago

Retailer 10

£3,264 GBP

View

Price last confirmed 9 days ago

Retailer 11

£3,517 GBP

$4,712 USD

View

Price last confirmed 9 days ago

Retailer 12

£3,743 GBP

$5,015 USD

View

Price last confirmed 10 days ago

Retailer 13

£3,882 GBP

View

Price last confirmed 10 days ago

Retailer 14

£4,131 GBP

$5,535 USD

View

Price last confirmed 10 days ago

Retailer 15

£4,772 GBP

$6,394 USD

View

Price last confirmed 9 days ago

Retailer 16

£4,909 GBP

SGD 8,889 SGD

View

Price last confirmed 10 days ago

B+

Retailer 17

£5,515 GBP

$7,390 USD

View

Retailer 18

£7,071 GBP

A$14,575 AUD

View

Price last confirmed 22 days ago

Most Expensive

Do Amore Diamonds

27-D7D5211D8 · Oct 23

£7,269 GBP

$9,740 USD

View

Price last confirmed 8 days ago

18 more retailers have this diamond

Prices start from £1,700 GBPSave up to £3,815 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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