Round|Lab Grown|IGI

4.28ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG754563427

Shape and cutting style on the report: Round brilliant

Certificate IGI LG754563427

Diamond specifications and retailer prices

From $4,629 NZD

$2,609 USD

As of October 29, 2026

Save $22,819 NZD (83%) vs most expensive(unlock to see where)

29 retailers carry this diamond

Most expensive: $27,448 NZD at Do Amore Diamonds · As of October 29, 2026

View at Do Amore Diamonds

About this 4.28ct lab-grown round diamond

This 4.28ct 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 LG754563427 or 754563427. Listed at 29 retailers as of October 29, 2026, with prices from $4,629 to $27,448, a $22,819 spread on the same certified stone. Do Amore Diamonds lists it at $27,448. 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

4.28

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle34.3°

Pavilion angle40.7°

OriginLab Grown

Grading LabIGI

CertificateIGI LG754563427

Dimensions10.47 × 10.51 × 6.36 mm

L/W Ratio1.00

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

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG754563427

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 29

Current: $27,448 NZD|Low: $3,972 NZD|High: $42,619 NZD|Avg: $12,301 NZD

Do Amore Diamonds

Retailer 2

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Retailer 22

October 30, 2026

Retailer 22$3,972 NZD

Retailer 9$4,902 NZD

Retailer 19$4,924 NZD

Retailer 4$5,163 NZD

Retailer 10$6,359 NZD

Retailer 21$6,760 NZD

Retailer 13$6,870 NZD

Retailer 3$7,094 NZD

Retailer 8$7,683 NZD

Retailer 15$7,858 NZD

Retailer 18$8,153 NZD

Retailer 16$10,875 NZD

Retailer 20$10,963 NZD

Retailer 7$12,358 NZD

Retailer 5$12,921 NZD

Retailer 11$13,365 NZD

Retailer 17$13,752 NZD

Retailer 14$17,829 NZD

Retailer 12$18,379 NZD

Retailer 6$20,019 NZD

Retailer 2$23,864 NZD

Do Amore Diamonds$27,448 NZD

36 data points across 22 retailers

29 retailers$4,629 NZD to $27,448 NZD

Retailer 1

$3,972 NZD

£1,763 GBP

Price last confirmed 14 days ago

Retailer 2

$4,342 NZD

$2,447 USD

View

Price last confirmed 25 days ago

Retailer 3

$4,342 NZD

$2,447 USD

View

Price last confirmed 17 days ago

Retailer 4

$4,466 NZD

$2,517 USD

View

Price last confirmed 32 days ago

Retailer 5

$4,629 NZD

$2,609 USD

View

Retailer 6

$4,629 NZD

$2,609 USD

View

Price last confirmed 28 days ago

Retailer 7

$4,902 NZD

$2,763 USD

View

Retailer 8

$4,924 NZD

$2,775 USD

View

Retailer 9

$5,108 NZD

$2,879 USD

View

Price last confirmed 31 days ago

Retailer 10

$5,163 NZD

$2,910 USD

View

Final sale: no returns

Retailer 11

$5,389 NZD

$3,037 USD

View

Price last confirmed 37 days ago

Retailer 12

$6,359 NZD

HK$28,000 HKD

View

Retailer 13

$6,760 NZD

$3,810 USD

View

Retailer 14

$6,870 NZD

£3,049 GBP

View

Retailer 15

$7,094 NZD

$3,998 USD

View

Retailer 16

$7,683 NZD

$4,330 USD

View

Retailer 17

$7,858 NZD

$4,429 USD

View

Price last confirmed 30 days ago

Retailer 18

$8,153 NZD

€4,376 EUR

View

Retailer 19

$10,875 NZD

ZAR 99,021 ZAR

View

Retailer 20

$10,963 NZD

A$9,506 AUD

View

Price last confirmed 8 days ago

B+

Retailer 21

$12,358 NZD

$6,965 USD

View

B+

Retailer 22

$12,921 NZD

$7,282 USD

View

B+

Retailer 23

$13,365 NZD

$7,533 USD

View

B+

Retailer 24

$13,752 NZD

£6,103 GBP

View

B+

Retailer 25

$17,829 NZD

$10,048 USD

View

B+

Retailer 26

$18,379 NZD

SGD 13,998 SGD

View

Retailer 27

$20,019 NZD

A$17,358 AUD

View

Price last confirmed 22 days ago

B+

Retailer 28

$23,864 NZD

$13,450 USD

View

Most Expensive

Do Amore Diamonds

27-17C00EE80 · Oct 29

$27,448 NZD

$15,470 USD

View

28 more retailers have this diamond

Prices start from $4,629 NZDSave up to $22,819 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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4.28ct Round

$4,629 NZD