Marquise|Lab Grown|IGI

3.56ct D VS2 Marquise Lab Grown Diamond

ID • D/VS2 • IGI LG845670717

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG845670717

Diamond specifications and retailer prices

From £431 GBP

$577 USD

As of October 30, 2026

Save £2,914 GBP (87%) vs most expensive(unlock to see where)

19 retailers carry this diamond

Most expensive: £3,344 GBP at Helzberg Diamonds · As of October 30, 2026

View at Helzberg Diamonds

About this 3.56ct lab-grown marquise diamond

This 3.56ct lab-grown marquise sits in the three to five carat band, graded D colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG845670717 or 845670717. Listed at 19 retailers as of October 30, 2026, with prices from £431 to £3,344, a £2,914 spread on the same certified stone. Helzberg Diamonds lists it at £3,344. 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

3.56

Carat

Colour

VS2

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle33.9°

Pavilion angle40.2°

OriginLab Grown

Grading LabIGI

CertificateIGI LG845670717

Dimensions15.98 × 7.92 × 4.92 mm

L/W Ratio2.02

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 LG845670717

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: £3,344 GBP|Low: £431 GBP|High: £3,344 GBP|Avg: £1,191 GBP

Helzberg Diamonds

Retailer 2

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October 31, 2026

Retailer 6£431 GBP

Retailer 7£481 GBP

Retailer 19£482 GBP

Retailer 16£534 GBP

Retailer 8£592 GBP

Retailer 15£631 GBP

Retailer 12£700 GBP

Retailer 9£716 GBP

Retailer 5£810 GBP

Retailer 2£834 GBP

Retailer 3£1,167 GBP

Retailer 14£1,324 GBP

Retailer 17£1,404 GBP

Retailer 11£1,719 GBP

Retailer 10£1,719 GBP

Retailer 4£1,729 GBP

Retailer 18£1,788 GBP

Retailer 13£2,330 GBP

Helzberg Diamonds£3,344 GBP

9 data points across 19 retailers

19 retailers£431 GBP to £3,344 GBP

Cheapest Retailer

£431 GBP

$577 USD

Retailer 2

£481 GBP

$645 USD

View

Final sale: no returns

Retailer 3

£482 GBP

$646 USD

View

Retailer 4

£534 GBP

$715 USD

View

Retailer 5

£592 GBP

HK$6,200 HKD

View

Retailer 6

£631 GBP

$845 USD

View

Retailer 7

£700 GBP

View

B+

Retailer 8

£716 GBP

$960 USD

View

Retailer 9

£810 GBP

$1,085 USD

View

Retailer 10

£834 GBP

View

Retailer 11

£1,167 GBP

$1,564 USD

View

B+

Retailer 12

£1,324 GBP

$1,774 USD

View

B+

Retailer 13

£1,404 GBP

$1,881 USD

View

B+

Retailer 14

£1,719 GBP

SGD 3,112 SGD

View

B+

Retailer 15

£1,719 GBP

$2,303 USD

View

B+

Retailer 16

£1,729 GBP

$2,316 USD

View

B+

Retailer 17

£1,788 GBP

$2,396 USD

View

Retailer 18

£2,330 GBP

View

Most Expensive

Helzberg Diamonds

ZXZOKLMNGNHN · Oct 30

£3,344 GBP

$4,481 USD

View

18 more retailers have this diamond

Prices start from £431 GBPSave up to £2,914 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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3.56ct Marquise

£431 GBP