Cushion|Lab Grown|IGI

3.55ct D VS2 Cushion Lab Grown Diamond

EX • D/VS2 • IGI LG662455349

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG662455349

Diamond specifications and retailer prices

From £608 GBP

$815 USD

As of October 29, 2026

Save £2,213 GBP (78%) vs most expensive(unlock to see where)

14 retailers carry this diamond

Most expensive: £2,821 GBP at Brilliant Earth · As of October 29, 2026

View at Brilliant Earth

About this 3.55ct lab-grown cushion diamond

This 3.55ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG662455349 or 662455349. Listed at 14 retailers as of October 29, 2026, with prices from £608 to £2,821, a £2,213 spread on the same certified stone. Brilliant Earth lists it at £2,821. 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

3.55

Carat

Colour

VS2

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle37°

Pavilion angle38.9°

OriginLab Grown

Grading LabIGI

CertificateIGI LG662455349

Dimensions8.82 × 8.80 × 5.88 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 LG662455349

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 29

Current: £2,821 GBP|Low: £462 GBP|High: £3,567 GBP|Avg: £1,308 GBP|-13.9%

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

October 30, 2026

Retailer 13£528 GBP

Retailer 12£608 GBP

Retailer 11£694 GBP

Retailer 7£728 GBP

Retailer 3£804 GBP

Retailer 6£812 GBP

Retailer 2£824 GBP

Retailer 4£1,160 GBP

Retailer 8£1,535 GBP

Retailer 14£1,699 GBP

Retailer 5£1,710 GBP

Retailer 9£2,220 GBP

Retailer 10£2,303 GBP

Brilliant Earth£2,821 GBP

38 data points across 14 retailers

14 retailers£608 GBP to £2,821 GBP

Retailer 1

£528 GBP

$707 USD

Price last confirmed 20 days ago

Retailer 2

£608 GBP

$815 USD

View

Retailer 3

£694 GBP

View

Price last confirmed 14 days ago

Retailer 4

£728 GBP

€929 EUR

View

Retailer 5

£804 GBP

$1,077 USD

View

Retailer 6

£812 GBP

$1,088 USD

View

Retailer 7

£824 GBP

View

Retailer 8

£1,160 GBP

$1,554 USD

View

B+

Retailer 9

£1,535 GBP

View

B+

Retailer 10

£1,699 GBP

$2,277 USD

View

Retailer 11

£1,710 GBP

$2,291 USD

View

Price last confirmed 12 days ago

Retailer 12

£2,220 GBP

$2,975 USD

View

Price last confirmed 12 days ago

Retailer 13

£2,303 GBP

View

Most Expensive

Brilliant Earth

12124362A · Oct 29

£2,821 GBP

$3,780 USD

View

13 more retailers have this diamond

Prices start from £608 GBPSave up to £2,213 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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