Marquise|Lab Grown|IGI

4.20ct D FL Marquise Lab Grown Diamond

EX • D/FL • IGI LG805610569

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG805610569

Diamond specifications and retailer prices

From €7,692 EUR

$8,594 USD

As of October 26, 2026

Save €24,412 EUR (76%) vs most expensive(unlock to see where)

24 retailers carry this diamond

Most expensive: €32,105 EUR at Taylor and Hart · As of October 26, 2026

View at Taylor and Hart

About this 4.2ct lab-grown marquise diamond

This 4.2ct lab-grown marquise sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG805610569 or 805610569. Listed at 24 retailers as of October 26, 2026, with prices from €7,692 to €32,105, a €24,412 spread on the same certified stone. Taylor and Hart lists it at €32,105. 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

4.20

Carat

Color

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.3°

Pavilion angle40.6°

OriginLab Grown

Grading LabIGI

CertificateIGI LG805610569

Dimensions16.36 × 8.45 × 5.26 mm

L/W Ratio1.94

Girdle conditionFaceted

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 LG805610569

Side View

Caratlytics Score

How it works →

Excellent

Excellent quality and great value

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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 26

Current: €16,452 EUR|Low: €7,460 EUR|High: €52,253 EUR|Avg: €16,885 EUR|-10.5%

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Taylor and Hart

October 27, 2026

Retailer 21€7,692 EUR

Retailer 17€8,142 EUR

Retailer 23€8,915 EUR

Retailer 4€9,272 EUR

Retailer 13€9,347 EUR

Retailer 10€9,567 EUR

Retailer 3€9,692 EUR

Retailer 7€10,168 EUR

Retailer 14€10,222 EUR

Retailer 2€10,342 EUR

Retailer 5€10,342 EUR

Retailer 24€10,936 EUR

Retailer 6€12,034 EUR

Retailer 12€12,223 EUR

Retailer 8€14,814 EUR

Retailer 1€16,452 EUR

Retailer 18€16,635 EUR

Retailer 20€19,737 EUR

Retailer 15€20,812 EUR

Retailer 19€21,926 EUR

Retailer 22€23,478 EUR

Retailer 9€27,078 EUR

Retailer 16€28,812 EUR

Taylor and Hart€32,105 EUR

Retailer 11€52,253 EUR

33 data points across 25 retailers

24 retailers€7,692 EUR to €32,105 EUR

Cheapest Retailer

€7,692 EUR

$8,594 USD

Retailer 2

€8,915 EUR

$9,960 USD

View

Retailer 3

€9,272 EUR

$10,359 USD

View

Price last confirmed 8 days ago

Retailer 4

€9,347 EUR

CA$14,504 CAD

View

Retailer 5

€9,567 EUR

$10,688 USD

View

Retailer 6

€9,692 EUR

$10,828 USD

View

Price last confirmed 7 days ago

Retailer 7

€10,168 EUR

$11,360 USD

View

Retailer 8

€10,222 EUR

$11,420 USD

View

Price last confirmed 5 days ago

Retailer 9

€10,342 EUR

$11,554 USD

View

Price last confirmed 16 days ago

Retailer 10

€10,342 EUR

$11,554 USD

View

Price last confirmed 7 days ago

Retailer 11

€10,936 EUR

$12,218 USD

View

B+

Retailer 12

€12,223 EUR

£10,753 GBP

View

Retailer 13

€14,814 EUR

£13,032 GBP

View

Price last confirmed 7 days ago

B+

Retailer 14

€16,452 EUR

View

B+

Retailer 15

€16,635 EUR

£14,634 GBP

View

Retailer 16

€17,880 EUR

$19,976 USD

View

Price last confirmed 11 days ago

Retailer 17

€19,737 EUR

$22,050 USD

View

Retailer 18

€20,812 EUR

$23,251 USD

View

Retailer 19

€21,926 EUR

ZAR 395,738 ZAR

View

Price last confirmed 8 days ago

Retailer 20

€23,478 EUR

$26,230 USD

View

Retailer 21

€27,078 EUR

$30,252 USD

View

Price last confirmed 8 days ago

Retailer 22

€28,812 EUR

$32,189 USD

View

Most Expensive

Taylor and Hart

3B90XIH · Oct 26

€32,105 EUR

$35,868 USD

View

22 more retailers have this diamond

Prices start from €7,692 EURSave up to €24,412 EUR

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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