Round|Lab Grown|IGI

4.29ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG754595507

Shape and cutting style on the report: Round brilliant

Certificate IGI LG754595507

Diamond specifications and retailer prices

From $4,943 NZD

$2,786 USD

As of October 31, 2026

Save $20,518 NZD (81%) vs most expensive(unlock to see where)

27 retailers carry this diamond

Most expensive: $25,461 NZD at Brilliant Earth · As of October 30, 2026

View at Brilliant Earth

About this 4.29ct lab-grown round diamond

This 4.29ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG754595507 or 754595507. Listed at 27 retailers as of October 30, 2026, with prices from $4,943 to $25,461, a $20,518 spread on the same certified stone. Brilliant Earth lists it at $25,461. 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

4.29

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34°

Pavilion angle40.7°

OriginLab Grown

Grading LabIGI

CertificateIGI LG754595507

Dimensions10.45 × 10.51 × 6.41 mm

L/W Ratio1.01

Girdle conditionFaceted

Culet sizePointed

Cert comments

HEARTS & ARROWS 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

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG754595507

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: $25,461 NZD|Low: $4,943 NZD|High: $44,322 NZD|Avg: $12,978 NZD|-42.6%

Brilliant Earth

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

Retailer 14

Retailer 15

Retailer 16

Retailer 17

Retailer 18

Retailer 19

October 31, 2026

Retailer 14$4,943 NZD

Retailer 7$5,351 NZD

Retailer 8$6,246 NZD

Retailer 12$6,886 NZD

Retailer 18$7,319 NZD

Retailer 17$7,677 NZD

Retailer 3$7,700 NZD

Retailer 2$8,147 NZD

Retailer 4$8,950 NZD

Retailer 13$10,901 NZD

Retailer 16$10,989 NZD

Retailer 6$13,675 NZD

Retailer 15$13,784 NZD

Retailer 5$14,372 NZD

Retailer 11$17,870 NZD

Retailer 9$18,060 NZD

Retailer 10$19,783 NZD

Retailer 19$20,057 NZD

Brilliant Earth$25,461 NZD

35 data points across 19 retailers

27 retailers$4,943 NZD to $25,461 NZD

Retailer 1

$4,803 NZD

$2,707 USD

Price last confirmed 25 days ago

Retailer 2

$4,803 NZD

$2,707 USD

View

Price last confirmed 18 days ago

Retailer 3

$4,940 NZD

$2,784 USD

View

Price last confirmed 32 days ago

Retailer 4

$4,943 NZD

$2,786 USD

View

Final sale: no returns

Retailer 5

$5,121 NZD

$2,886 USD

View

Retailer 6

$5,121 NZD

$2,886 USD

View

Price last confirmed 29 days ago

Retailer 7

$5,351 NZD

$3,016 USD

View

Retailer 8

$5,651 NZD

$3,185 USD

View

Price last confirmed 31 days ago

Retailer 9

$5,962 NZD

$3,360 USD

View

Price last confirmed 37 days ago

Retailer 10

$6,246 NZD

HK$27,500 HKD

View

Retailer 11

$6,886 NZD

£3,056 GBP

View

Retailer 12

$7,319 NZD

$4,125 USD

View

Retailer 13

$7,677 NZD

$4,327 USD

View

Retailer 14

$7,700 NZD

$4,340 USD

View

Retailer 15

$7,876 NZD

$4,439 USD

View

Price last confirmed 31 days ago

Retailer 16

$8,147 NZD

€4,373 EUR

View

Retailer 17

$8,950 NZD

$5,044 USD

View

Retailer 18

$10,901 NZD

ZAR 99,250 ZAR

View

Retailer 19

$10,989 NZD

A$9,528 AUD

View

Price last confirmed 9 days ago

B+

Retailer 20

$13,675 NZD

$7,707 USD

View

B+

Retailer 21

$13,784 NZD

£6,117 GBP

View

B+

Retailer 22

$14,372 NZD

$8,100 USD

View

B+

Retailer 23

$17,870 NZD

$10,071 USD

View

B+

Retailer 24

$18,060 NZD

SGD 13,755 SGD

View

Retailer 25

$19,783 NZD

$11,150 USD

View

Retailer 26

$20,057 NZD

A$17,391 AUD

View

Price last confirmed 22 days ago

Most Expensive

Brilliant Earth

18146459A · Oct 30

$25,461 NZD

$14,350 USD

View

26 more retailers have this diamond

Prices start from $4,943 NZDSave up to $20,518 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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