Heart|Lab Grown|IGI

1.89ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG830620146

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG830620146

Diamond specifications and retailer prices

From $1,492 NZD

$841 USD

As of October 30, 2026

Save $6,652 NZD (82%) vs most expensive(unlock to see where)

17 retailers carry this diamond

Most expensive: $8,144 NZD at Brilliant Earth · As of October 31, 2026

View at Brilliant Earth

About this 1.89ct lab-grown heart diamond

This 1.89ct lab-grown heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG830620146 or 830620146. Listed at 17 retailers as of October 30, 2026, with prices from $1,492 to $8,144, a $6,652 spread on the same certified stone. Brilliant Earth lists it at $8,144. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.89

Carat

Colour

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle35.8°

Pavilion angle36.7°

OriginLab Grown

Grading LabIGI

CertificateIGI LG830620146

Dimensions7.86 × 8.81 × 4.76 mm

L/W Ratio1.12

Girdle conditionFaceted

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 LG830620146

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: $8,144 NZD|Low: $1,492 NZD|High: $10,770 NZD|Avg: $3,969 NZD|-24.4%

Brilliant Earth

Retailer 2

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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

November 1, 2026

Retailer 16$1,492 NZD

Retailer 5$1,732 NZD

Retailer 7$1,852 NZD

Retailer 10$1,957 NZD

Retailer 6$2,040 NZD

Retailer 14$2,168 NZD

Retailer 12$2,660 NZD

Retailer 15$2,787 NZD

Retailer 4$3,015 NZD

Retailer 13$3,980 NZD

Retailer 11$4,867 NZD

Retailer 9$5,701 NZD

Retailer 3$5,999 NZD

Retailer 2$6,487 NZD

Retailer 8$6,594 NZD

Retailer 17$7,083 NZD

Brilliant Earth$8,144 NZD

4 data points across 17 retailers

17 retailers$1,492 NZD to $8,144 NZD

Cheapest Retailer

$1,492 NZD

$841 USD

Retailer 2

$1,732 NZD

$976 USD

View

Retailer 3

$1,852 NZD

$1,044 USD

View

Final sale: no returns

Retailer 4

$1,957 NZD

£868 GBP

View

Retailer 5

$2,040 NZD

$1,150 USD

View

Retailer 6

$2,168 NZD

$1,222 USD

View

B+

Retailer 7

$2,660 NZD

£1,180 GBP

View

B+

Retailer 8

$2,787 NZD

$1,571 USD

View

B+

Retailer 9

$3,015 NZD

$1,699 USD

View

B+

Retailer 10

$3,980 NZD

$2,243 USD

View

Retailer 11

$4,867 NZD

$2,743 USD

View

Retailer 12

$5,701 NZD

$3,213 USD

View

Retailer 13

$5,999 NZD

$3,381 USD

View

Retailer 14

$6,487 NZD

£2,879 GBP

View

Retailer 15

$6,594 NZD

SGD 5,022 SGD

View

Retailer 16

$7,083 NZD

$3,992 USD

View

Most Expensive

Brilliant Earth

22348973A · Oct 31

$8,144 NZD

$4,590 USD

View

16 more retailers have this diamond

Prices start from $1,492 NZDSave up to $6,652 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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1.89ct Heart

$1,492 NZD