Marquise|Lab Grown|IGI

5.51ct E VS1 Marquise Lab Grown Diamond

EX • E/VS1 • IGI LG752586341

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG752586341

Diamond specifications and retailer prices

From $1,874 NZD

$1,056 USD

As of October 31, 2026

Save $9,553 NZD (84%) vs most expensive(unlock to see where)

15 retailers carry this diamond

Most expensive: $22,427 NZD at Brilliant Earth · As of October 22, 2026

View at Brilliant Earth

About this 5.51ct lab-grown marquise diamond

This 5.51ct lab-grown marquise sits in the over five carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG752586341 or 752586341. Listed at 15 retailers as of October 31, 2026, with a 510% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

5.51

Carat

Colour

VS1

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle30.1°

Pavilion angle37.8°

OriginLab Grown

Grading LabIGI

CertificateIGI LG752586341

Dimensions18.69 × 9.56 × 5.35 mm

L/W Ratio1.96

Girdle conditionFaceted

Culet sizePointed

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 LG752586341

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: $11,426 NZD|Low: $1,443 NZD|High: $23,119 NZD|Avg: $6,584 NZD|-50.6%

Brilliant Earth

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

October 30, 2026

Retailer 7$1,874 NZD

Retailer 2$2,333 NZD

Retailer 5$2,874 NZD

Retailer 3$3,525 NZD

Retailer 4$3,942 NZD

Retailer 8$5,354 NZD

Retailer 6$6,017 NZD

Retailer 10$6,738 NZD

Retailer 9$10,087 NZD

Brilliant Earth$11,426 NZD

24 data points across 10 retailers

15 retailers$1,874 NZD to $11,426 NZD

Retailer 1

$1,673 NZD

$943 USD

Price last confirmed 21 days ago

Retailer 2

$1,874 NZD

$1,056 USD

View

Final sale: no returns

Retailer 3

$1,941 NZD

$1,094 USD

View

Price last confirmed 21 days ago

Retailer 4

$1,941 NZD

$1,094 USD

View

Price last confirmed 19 days ago

Retailer 5

$2,333 NZD

$1,315 USD

View

B+

Retailer 6

$2,874 NZD

$1,620 USD

View

Retailer 7

$3,525 NZD

€1,892 EUR

View

Retailer 8

$3,942 NZD

$2,222 USD

View

B+

Retailer 9

$5,354 NZD

£2,376 GBP

View

Retailer 10

$5,456 NZD

$3,075 USD

View

Price last confirmed 22 days ago

B+

Retailer 11

$6,017 NZD

$3,391 USD

View

B+

Retailer 12

$6,738 NZD

SGD 5,132 SGD

View

Retailer 13

$10,087 NZD

$5,685 USD

View

Price last confirmed 25 days ago

Retailer 14

$11,426 NZD

$6,440 USD

View

Most Expensive

Brilliant Earth

16806716A · Oct 22

$22,427 NZD

$12,640 USD

View

Price under review

14 more retailers have this diamond

Prices start from $1,874 NZDSave up to $9,553 NZD

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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5.51ct Marquise

$1,874 NZD