Marquise|Lab Grown|IGI

4.02ct E IF Marquise Lab Grown Diamond

EX • E/IF • IGI LG754507865

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG754507865

Diamond specifications and retailer prices

From $11,339 AUD

$7,965 USD

As of October 28, 2026

Save $9,503 AUD (46%) vs most expensive(unlock to see where)

31 retailers carry this diamond

Most expensive: $54,231 AUD at Taylor and Hart · As of October 20, 2026

View at Taylor and Hart

About this 4.02ct lab-grown marquise diamond

This 4.02ct lab-grown marquise sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG754507865 or 754507865. Listed at 31 retailers as of October 28, 2026, with a 84% 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

4.02

Carat

Colour

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle33.3°

Pavilion angle40.1°

OriginLab Grown

Grading LabIGI

CertificateIGI LG754507865

Dimensions16.37 × 8.43 × 5.16 mm

L/W Ratio1.94

Girdle conditionFaceted

Culet sizePointed

Cert comments

As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG754507865

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 28

Current: $20,842 AUD|Low: $10,152 AUD|High: $88,491 AUD|Avg: $30,057 AUD|-2.1%

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Taylor and Hart

October 31, 2026

Retailer 20$11,403 AUD

Retailer 16$12,533 AUD

Retailer 8$14,180 AUD

Retailer 10$14,283 AUD

Retailer 22$15,202 AUD

Retailer 3$16,258 AUD

Retailer 2$17,560 AUD

Retailer 23$18,007 AUD

Retailer 11$19,458 AUD

Retailer 1$20,842 AUD

Retailer 17$22,291 AUD

Retailer 13$26,013 AUD

Retailer 21$28,674 AUD

Retailer 7$29,182 AUD

Retailer 6$30,088 AUD

Retailer 19$30,538 AUD

Retailer 15$30,923 AUD

Retailer 18$38,225 AUD

Retailer 12$39,708 AUD

Retailer 4$45,269 AUD

Retailer 14$50,361 AUD

Taylor and Hart$54,231 AUD

Retailer 9$67,898 AUD

Retailer 5$88,491 AUD

31 data points across 24 retailers

31 retailers$11,339 AUD to $20,842 AUD

Cheapest Retailer

$11,339 AUD

$7,965 USD

Retailer 2

$11,403 AUD

$8,010 USD

View

Price last confirmed 10 days ago

Retailer 3

$12,533 AUD

$8,804 USD

View

Price last confirmed 8 days ago

Retailer 4

$14,180 AUD

$9,961 USD

View

Price last confirmed 10 days ago

Retailer 5

$14,180 AUD

$9,961 USD

View

Price last confirmed 23 days ago

Retailer 6

$14,180 AUD

$9,961 USD

View

Price last confirmed 31 days ago

Retailer 7

$14,283 AUD

$10,033 USD

View

Price last confirmed 10 days ago

Retailer 8

$14,748 AUD

$10,360 USD

View

Price last confirmed 32 days ago

Retailer 9

$15,202 AUD

£8,408 GBP

View

Price last confirmed 14 days ago

Retailer 10

$16,223 AUD

$11,396 USD

View

Price last confirmed 33 days ago

Retailer 11

$16,258 AUD

$11,420 USD

View

Price last confirmed 8 days ago

Retailer 12

$16,450 AUD

$11,555 USD

View

Price last confirmed 28 days ago

Retailer 13

$16,450 AUD

$11,555 USD

View

Price last confirmed 21 days ago

Retailer 14

$17,016 AUD

$11,953 USD

View

Price last confirmed 9 days ago

Retailer 15

$17,016 AUD

$11,953 USD

View

Price last confirmed 21 days ago

Retailer 16

$17,016 AUD

$11,953 USD

View

Price last confirmed 31 days ago

Retailer 17

$17,560 AUD

$12,335 USD

View

Price last confirmed 10 days ago

Retailer 18

$18,007 AUD

$12,649 USD

View

Price last confirmed 10 days ago

B+

Retailer 19

$20,842 AUD

$14,640 USD

View

Retailer 20

$22,291 AUD

£12,329 GBP

View

Price last confirmed 10 days ago

Retailer 21

$26,013 AUD

£14,388 GBP

View

Price last confirmed 10 days ago

Retailer 22

$28,674 AUD

£15,860 GBP

View

Price last confirmed 10 days ago

Retailer 23

$29,182 AUD

View

Price last confirmed 23 days ago

Retailer 24

$30,088 AUD

$21,135 USD

View

Price last confirmed 9 days ago

Retailer 25

$38,225 AUD

ZAR 433,777 ZAR

View

Price last confirmed 11 days ago

Retailer 26

$39,708 AUD

View

Price last confirmed 9 days ago

Retailer 27

$45,269 AUD

$31,799 USD

View

Price last confirmed 10 days ago

Retailer 28

$50,361 AUD

$35,376 USD

View

Price last confirmed 9 days ago

Most Expensive

Taylor and Hart

CAYX2TK · Oct 20

$54,231 AUD

$38,094 USD

View

Price last confirmed 11 days ago

28 more retailers have this diamond

Prices start from $11,339 AUDSave up to $9,503 AUD

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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