Round|Lab Grown|IGI

3.65ct E FL Round Lab Grown Diamond

ID • E/FL • IGI LG804658133

Shape and cutting style on the report: Round brilliant

Certificate IGI LG804658133

Diamond specifications and retailer prices

From £1,473 GBP

$1,973 USD

As of October 29, 2026

Save £8,349 GBP (85%) vs most expensive(unlock to see where)

22 retailers carry this diamond

Most expensive: £9,822 GBP at Brilliant Earth · As of October 30, 2026

View at Brilliant Earth

About this 3.65ct lab-grown round diamond

This 3.65ct lab-grown round sits in the three to five carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG804658133 or 804658133. Listed at 22 retailers as of October 29, 2026, with prices from £1,473 to £9,822, a £8,349 spread on the same certified stone. Brilliant Earth lists it at £9,822. 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

3.65

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.8°

Pavilion angle41.1°

OriginLab Grown

Grading LabIGI

CertificateIGI LG804658133

Dimensions9.86 × 9.81 × 6.13 mm

L/W Ratio1.01

Girdle conditionFaceted

Cert comments

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 LG804658133

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: £9,822 GBP|Low: £1,473 GBP|High: £11,479 GBP|Avg: £3,595 GBP|-14.4%

Brilliant Earth

Retailer 2

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October 31, 2026

Retailer 6£1,473 GBP

Retailer 20£1,602 GBP

Retailer 21£1,649 GBP

Retailer 4£1,708 GBP

Retailer 14£1,789 GBP

Retailer 12£1,826 GBP

Retailer 17£1,832 GBP

Retailer 13£2,340 GBP

Retailer 8£2,347 GBP

Retailer 19£2,570 GBP

Retailer 7£2,673 GBP

Retailer 2£2,714 GBP

Retailer 3£2,804 GBP

Retailer 15£3,966 GBP

Retailer 18£4,430 GBP

Retailer 9£4,691 GBP

Retailer 16£4,903 GBP

Retailer 10£5,738 GBP

Retailer 5£5,978 GBP

Retailer 11£6,284 GBP

Brilliant Earth£9,822 GBP

29 data points across 21 retailers

22 retailers£1,473 GBP to £9,822 GBP

Cheapest Retailer

£1,473 GBP

$1,973 USD

Retailer 2

£1,602 GBP

$2,146 USD

View

Retailer 3

£1,649 GBP

$2,209 USD

View

Final sale: no returns

Retailer 4

£1,708 GBP

$2,288 USD

View

Retailer 5

£1,789 GBP

$2,397 USD

View

Price last confirmed 20 days ago

Retailer 6

£1,826 GBP

$2,447 USD

View

Retailer 7

£1,832 GBP

$2,455 USD

View

Retailer 8

£2,340 GBP

View

Retailer 9

£2,347 GBP

$3,145 USD

View

Retailer 10

£2,570 GBP

$3,443 USD

View

B+

Retailer 11

£2,673 GBP

$3,582 USD

View

B+

Retailer 12

£2,714 GBP

€3,463 EUR

View

B+

Retailer 13

£2,804 GBP

$3,757 USD

View

B+

Retailer 14

£3,966 GBP

ZAR 85,841 ZAR

View

B+

Retailer 15

£4,430 GBP

$5,936 USD

View

B+

Retailer 16

£4,459 GBP

$5,975 USD

View

B+

Retailer 17

£4,691 GBP

$6,285 USD

View

B+

Retailer 18

£4,903 GBP

View

B+

Retailer 19

£5,738 GBP

SGD 10,390 SGD

View

B+

Retailer 20

£5,978 GBP

$8,009 USD

View

B+

Retailer 21

£6,284 GBP

$8,420 USD

View

Most Expensive

Brilliant Earth

21420536A · Oct 30

£9,822 GBP

$13,160 USD

View

21 more retailers have this diamond

Prices start from £1,473 GBPSave up to £8,349 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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3.65ct Round

£1,473 GBP