Round|Lab Grown|IGI

5.42ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG780667855

Shape and cutting style on the report: Round brilliant

Certificate IGI LG780667855

Diamond specifications and retailer prices

From £4,559 GBP

$6,109 USD

As of October 29, 2026

Save £31,003 GBP (87%) vs most expensive(unlock to see where)

22 retailers carry this diamond

Most expensive: £35,563 GBP at Mervis Diamond Importers · As of October 31, 2026

View at Mervis Diamond Importers

About this 5.42ct lab-grown round diamond

This 5.42ct lab-grown round sits in the over five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780667855 or 780667855. Listed at 22 retailers as of October 29, 2026, with prices from £4,559 to £35,563, a £31,003 spread on the same certified stone. Mervis Diamond Importers lists it at £35,563. 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

5.42

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.9°

Pavilion angle40.6°

OriginLab Grown

Grading LabIGI

CertificateIGI LG780667855

Dimensions11.24 × 11.29 × 6.92 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 LG780667855

Side View

Caratlytics Score

How it works →

A+

Exceptional

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: £35,563 GBP|Low: £4,559 GBP|High: £35,563 GBP|Avg: £10,543 GBP

Mervis Diamond Importers

Retailer 2

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November 1, 2026

Retailer 20£4,559 GBP

Retailer 17£4,778 GBP

Retailer 11£5,106 GBP

Retailer 12£5,288 GBP

Retailer 16£5,291 GBP

Retailer 18£6,289 GBP

Retailer 19£6,674 GBP

Retailer 4£6,930 GBP

Retailer 6£6,956 GBP

Retailer 2£7,306 GBP

Retailer 3£7,670 GBP

Retailer 15£9,217 GBP

Retailer 9£9,746 GBP

Retailer 14£11,733 GBP

Retailer 13£11,861 GBP

Retailer 5£14,556 GBP

Retailer 8£15,526 GBP

Retailer 10£20,019 GBP

Retailer 7£31,368 GBP

Mervis Diamond Importers£35,563 GBP

42 data points across 20 retailers

22 retailers£4,559 GBP to £35,563 GBP

A+

Cheapest Retailer

£4,559 GBP

$6,109 USD

Retailer 2

£4,778 GBP

$6,402 USD

View

Retailer 3

£5,106 GBP

$6,842 USD

View

Final sale: no returns

Retailer 4

£5,288 GBP

$7,086 USD

View

Price last confirmed 15 days ago

Retailer 5

£5,288 GBP

$7,086 USD

View

Retailer 6

£5,291 GBP

$7,090 USD

View

Retailer 7

£6,289 GBP

$8,426 USD

View

Retailer 8

£6,674 GBP

$8,942 USD

View

Retailer 9

£6,930 GBP

$9,286 USD

View

Retailer 10

£6,956 GBP

$9,320 USD

View

Price last confirmed 13 days ago

Retailer 11

£7,306 GBP

View

Retailer 12

£7,670 GBP

$10,277 USD

View

Retailer 13

£9,217 GBP

€11,762 EUR

View

Retailer 14

£9,746 GBP

$13,059 USD

View

Retailer 15

£11,733 GBP

View

Retailer 16

£11,861 GBP

ZAR 256,733 ZAR

View

B+

Retailer 17

£13,457 GBP

$18,031 USD

View

B+

Retailer 18

£14,556 GBP

$19,504 USD

View

B+

Retailer 19

£15,526 GBP

$20,803 USD

View

B+

Retailer 20

£20,019 GBP

$26,823 USD

View

Retailer 21

£31,368 GBP

$42,030 USD

View

Most Expensive

Mervis Diamond Importers

1974989995 · Oct 31

£35,563 GBP

$47,650 USD

View

21 more retailers have this diamond

Prices start from £4,559 GBPSave up to £31,003 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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A+

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