Marquise|Lab Grown|IGI

3.51ct E FL Marquise Lab Grown Diamond

ID • E/FL • IGI LG717586084

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG717586084

Diamond specifications and retailer prices

From $9,803 CAD

$7,004 USD

As of October 30, 2026

Save $28,986 CAD (75%) vs most expensive(unlock to see where)

24 retailers carry this diamond

Most expensive: $38,788 CAD at Taylor and Hart · As of October 30, 2026

View at Taylor and Hart

About this 3.51ct lab-grown marquise diamond

This 3.51ct lab-grown marquise sits in the three to five carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG717586084 or 717586084. Listed at 24 retailers as of October 30, 2026, with prices from $9,803 to $38,788, a $28,986 spread on the same certified stone. Taylor and Hart lists it at $38,788. 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

3.51

Carat

Color

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle36.4°

Pavilion angle40.8°

OriginLab Grown

Grading LabIGI

CertificateIGI LG717586084

Dimensions15.17 × 7.77 × 5.08 mm

L/W Ratio1.95

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

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG717586084

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: $26,404 CAD|Low: $9,803 CAD|High: $41,154 CAD|Avg: $16,023 CAD|-11.5%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

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Retailer 10

Retailer 11

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Retailer 20

Taylor and Hart

October 29, 2026

Retailer 7$9,803 CAD

Retailer 5$10,181 CAD

Retailer 2$10,195 CAD

Retailer 11$10,496 CAD

Retailer 19$10,686 CAD

Retailer 4$11,316 CAD

Retailer 6$11,372 CAD

Retailer 9$11,372 CAD

Retailer 20$12,298 CAD

Retailer 8$13,499 CAD

Retailer 17$13,780 CAD

Retailer 13$13,845 CAD

Retailer 12$14,266 CAD

Retailer 10$16,275 CAD

Retailer 18$16,683 CAD

Retailer 16$16,834 CAD

Retailer 15$18,371 CAD

Retailer 3$20,759 CAD

Retailer 14$22,448 CAD

Retailer 1$26,404 CAD

Taylor and Hart$38,788 CAD

32 data points across 21 retailers

24 retailers$9,803 CAD to $38,788 CAD

Cheapest Retailer

$9,803 CAD

$7,004 USD

B+

Retailer 2

$10,181 CAD

$7,274 USD

View

Retailer 3

$10,195 CAD

$7,284 USD

View

Retailer 4

$10,496 CAD

$7,499 USD

View

Retailer 5

$10,686 CAD

$7,635 USD

View

B+

Retailer 6

$11,316 CAD

$8,085 USD

View

B+

Retailer 7

$11,372 CAD

$8,125 USD

View

Retailer 8

$11,372 CAD

$8,125 USD

View

Price last confirmed 14 days ago

B+

Retailer 9

$12,298 CAD

$8,787 USD

View

B+

Retailer 10

$13,499 CAD

$9,645 USD

View

B+

Retailer 11

$13,780 CAD

$9,846 USD

View

Final sale: no returns

Retailer 12

$13,845 CAD

£7,789 GBP

View

Price last confirmed 29 days ago

B+

Retailer 13

$14,266 CAD

£8,026 GBP

View

Retailer 14

$15,557 CAD

$11,115 USD

View

Price last confirmed 31 days ago

B+

Retailer 15

$16,275 CAD

£9,156 GBP

View

Retailer 16

$16,683 CAD

$11,920 USD

View

Price last confirmed 8 days ago

Retailer 17

$16,834 CAD

$12,028 USD

View

B+

Retailer 18

$17,775 CAD

$12,700 USD

View

B+

Retailer 19

$18,371 CAD

€12,501 EUR

View

B+

Retailer 20

$19,261 CAD

$13,762 USD

View

B+

Retailer 21

$20,759 CAD

$14,832 USD

View

Retailer 22

$22,448 CAD

£12,629 GBP

View

Retailer 23

$26,404 CAD

ZAR 304,774 ZAR

View

Most Expensive

Taylor and Hart

HWQ20GM · Oct 30

$38,788 CAD

$27,714 USD

View

23 more retailers have this diamond

Prices start from $9,803 CADSave up to $28,986 CAD

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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