Radiant|Lab Grown|IGI

1.86ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG799646888

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG799646888

Diamond specifications and retailer prices

From £482 GBP

$646 USD

As of October 30, 2026

Save £2,891 GBP (86%) vs most expensive(unlock to see where)

25 retailers carry this diamond

Most expensive: £4,582 GBP at Brilliant Earth · As of September 28, 2026

View at Brilliant Earth

About this 1.86ct lab-grown radiant diamond

This 1.86ct lab-grown radiant 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 LG799646888 or 799646888. Listed at 25 retailers as of October 30, 2026, with a 600% 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

1.86

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle41°

Pavilion angle36°

OriginLab Grown

Grading LabIGI

CertificateIGI LG799646888

Dimensions8.63 × 6.02 × 4.17 mm

L/W Ratio1.43

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 LG799646888

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: £3,373 GBP|Low: £482 GBP|High: £4,448 GBP|Avg: £1,507 GBP|-24.2%

Brilliant Earth

Retailer 2

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October 30, 2026

Retailer 14£482 GBP

Retailer 22£524 GBP

Retailer 12£559 GBP

Retailer 19£562 GBP

Retailer 13£634 GBP

Retailer 20£690 GBP

Retailer 4£752 GBP

Retailer 16£893 GBP

Retailer 21£914 GBP

Retailer 5£954 GBP

Retailer 18£1,027 GBP

Retailer 7£1,185 GBP

Retailer 6£1,299 GBP

Retailer 10£1,572 GBP

Retailer 8£1,740 GBP

Retailer 9£1,929 GBP

Retailer 2£1,968 GBP

Retailer 11£2,031 GBP

Retailer 17£2,368 GBP

Retailer 3£2,862 GBP

Brilliant Earth£3,373 GBP

Retailer 15£3,373 GBP

24 data points across 22 retailers

25 retailers£482 GBP to £3,373 GBP

Cheapest Retailer

£482 GBP

$646 USD

Retailer 2

£524 GBP

$702 USD

View

Retailer 3

£559 GBP

$749 USD

View

Retailer 4

£562 GBP

$753 USD

View

Final sale: no returns

Retailer 5

£596 GBP

$799 USD

View

Price last confirmed 14 days ago

Retailer 6

£634 GBP

View

Retailer 7

£690 GBP

$925 USD

View

Retailer 8

£752 GBP

$1,007 USD

View

Retailer 9

£893 GBP

View

Retailer 10

£914 GBP

$1,224 USD

View

Retailer 11

£954 GBP

€1,217 EUR

View

Price last confirmed 7 days ago

B+

Retailer 12

£1,027 GBP

ZAR 22,229 ZAR

View

B+

Retailer 13

£1,185 GBP

$1,588 USD

View

B+

Retailer 14

£1,299 GBP

$1,741 USD

View

B+

Retailer 15

£1,572 GBP

$2,106 USD

View

B+

Retailer 16

£1,740 GBP

View

B+

Retailer 17

£1,837 GBP

$2,462 USD

View

B+

Retailer 18

£1,929 GBP

$2,584 USD

View

B+

Retailer 19

£1,968 GBP

$2,637 USD

View

B+

Retailer 20

£2,031 GBP

SGD 3,678 SGD

View

B+

Retailer 21

£2,368 GBP

View

Retailer 22

£2,862 GBP

$3,835 USD

View

Retailer 23

£3,373 GBP

$4,520 USD

View

Retailer 24

£3,373 GBP

$4,520 USD

View

Price last confirmed 9 days ago

Most Expensive

Brilliant Earth

20575454A · Sep 28

£4,582 GBP

$6,140 USD

View

Price last confirmed 32 days ago

24 more retailers have this diamond

Prices start from £482 GBPSave up to £2,891 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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