Marquise|Lab Grown|IGI

3.21ct D VVS2 Marquise Lab Grown Diamond

ID • D/VVS2 • IGI LG821661424

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG821661424

Diamond specifications and retailer prices

From £671 GBP

$899 USD

As of October 31, 2026

Save £3,635 GBP (84%) vs most expensive(unlock to see where)

17 retailers carry this diamond

Most expensive: £4,306 GBP at Brilliant Earth · As of October 31, 2026

View at Brilliant Earth

About this 3.21ct lab-grown marquise diamond

This 3.21ct lab-grown marquise sits in the three to five carat band, graded D colour (colourless) and VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG821661424 or 821661424. Listed at 17 retailers as of October 31, 2026, with prices from £671 to £4,306, a £3,635 spread on the same certified stone. Brilliant Earth lists it at £4,306. 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

3.21

Carat

Colour

VVS2

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle38.4°

Pavilion angle37.4°

OriginLab Grown

Grading LabIGI

CertificateIGI LG821661424

Dimensions16.31 × 7.62 × 4.41 mm

L/W Ratio2.14

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

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG821661424

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 31

Current: £4,306 GBP|Low: £671 GBP|High: £4,545 GBP|Avg: £1,717 GBP|-5.3%

Brilliant Earth

Retailer 2

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October 31, 2026

Retailer 10£671 GBP

Retailer 6£832 GBP

Retailer 16£1,002 GBP

Retailer 13£1,067 GBP

Retailer 5£1,275 GBP

Retailer 9£1,374 GBP

Retailer 12£1,570 GBP

Retailer 8£1,624 GBP

Retailer 15£1,664 GBP

Retailer 2£2,176 GBP

Retailer 4£2,421 GBP

Retailer 3£2,506 GBP

Retailer 7£2,636 GBP

Retailer 11£2,657 GBP

Retailer 14£2,774 GBP

Brilliant Earth£4,306 GBP

20 data points across 16 retailers

17 retailers£671 GBP to £4,306 GBP

Cheapest Retailer

£671 GBP

$899 USD

Final sale: no returns

Retailer 2

£832 GBP

$1,115 USD

View

Retailer 3

£1,002 GBP

$1,342 USD

View

Retailer 4

£1,067 GBP

View

B+

Retailer 5

£1,275 GBP

€1,627 EUR

View

B+

Retailer 6

£1,374 GBP

$1,841 USD

View

B+

Retailer 7

£1,570 GBP

A$3,237 AUD

View

B+

Retailer 8

£1,624 GBP

ZAR 35,160 ZAR

View

B+

Retailer 9

£1,664 GBP

$2,229 USD

View

B+

Retailer 10

£2,176 GBP

$2,915 USD

View

B+

Retailer 11

£2,421 GBP

$3,243 USD

View

B+

Retailer 12

£2,506 GBP

$3,358 USD

View

B+

Retailer 13

£2,636 GBP

View

Retailer 14

£2,657 GBP

A$5,478 AUD

View

B+

Retailer 15

£2,774 GBP

SGD 5,022 SGD

View

Retailer 16

£3,444 GBP

$4,615 USD

View

Price last confirmed 24 days ago

Most Expensive

Brilliant Earth

20855262A · Oct 31

£4,306 GBP

$5,770 USD

View

16 more retailers have this diamond

Prices start from £671 GBPSave up to £3,635 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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3.21ct Marquise

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