Heart|Lab Grown|IGI

1.78ct E IF Heart Lab Grown Diamond

EX • E/IF • IGI LG598394224

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG598394224

Diamond specifications and retailer prices

From $2,792 NZD

$1,568 USD

As of October 28, 2026

Save $6,591 NZD (70%) vs most expensive(unlock to see where)

22 retailers carry this diamond

Most expensive: $12,934 NZD at With Clarity · As of October 30, 2026

View at With Clarity

About this 1.78ct lab-grown heart diamond

This 1.78ct lab-grown heart sits in the one-and-a-half to two carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG598394224 or 598394224. Listed at 22 retailers as of October 28, 2026, with a 236% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78

Carat

Colour

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle35.2°

Pavilion angle40.3°

OriginLab Grown

Grading LabIGI

CertificateIGI LG598394224

Dimensions7.51 × 8.32 × 4.90 mm

L/W Ratio1.11

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 LG598394224

Side View

Caratlytics Score

How it works →

B+

Very Good

Strong quality and value balance

Unlock full score analysis

See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28

Current: $2,950 NZD|Low: $2,254 NZD|High: $12,934 NZD|Avg: $4,825 NZD|-2.7%

Retailer 1

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

With Clarity

October 30, 2026

Retailer 10$2,254 NZD

Retailer 8$2,724 NZD

Retailer 9$2,724 NZD

Retailer 17$2,792 NZD

Retailer 18$2,795 NZD

Retailer 1$2,950 NZD

Retailer 15$2,991 NZD

Retailer 2$3,030 NZD

Retailer 11$3,767 NZD

Retailer 5$3,819 NZD

Retailer 12$4,289 NZD

Retailer 13$4,913 NZD

Retailer 7$5,078 NZD

Retailer 6$6,793 NZD

Retailer 3$7,343 NZD

Retailer 16$8,422 NZD

Retailer 14$8,633 NZD

Retailer 4$9,383 NZD

With Clarity$12,934 NZD

34 data points across 19 retailers

22 retailers$2,792 NZD to $9,383 NZD

Retailer 1

$2,254 NZD

$1,266 USD

Price last confirmed 27 days ago

Retailer 2

$2,555 NZD

$1,435 USD

View

Price last confirmed 31 days ago

Retailer 3

$2,724 NZD

$1,530 USD

View

Price last confirmed 17 days ago

Retailer 4

$2,724 NZD

$1,530 USD

View

Price last confirmed 26 days ago

B+

Retailer 5

$2,792 NZD

$1,568 USD

View

Final sale: no returns

B+

Retailer 6

$2,795 NZD

$1,570 USD

View

B+

Retailer 7

$2,950 NZD

£1,305 GBP

View

B+

Retailer 8

$2,991 NZD

$1,680 USD

View

B+

Retailer 9

$3,030 NZD

$1,702 USD

View

B+

Retailer 10

$3,767 NZD

£1,666 GBP

View

B+

Retailer 11

$3,819 NZD

$2,145 USD

View

B+

Retailer 12

$4,289 NZD

€2,294 EUR

View

B+

Retailer 13

$4,913 NZD

ZAR 44,578 ZAR

View

Retailer 14

$5,078 NZD

$2,852 USD

View

Retailer 15

$5,106 NZD

$2,868 USD

View

Price last confirmed 29 days ago

Retailer 16

$6,793 NZD

A$5,870 AUD

View

Price last confirmed 7 days ago

Retailer 17

$7,343 NZD

$4,124 USD

View

Retailer 18

$8,422 NZD

$4,730 USD

View

Retailer 19

$8,422 NZD

$4,730 USD

View

Retailer 20

$8,633 NZD

£3,818 GBP

View

Retailer 21

$9,383 NZD

$5,270 USD

View

Most Expensive

With Clarity

598394224 · Oct 30

$12,934 NZD

$7,264 USD

View

Price under review

21 more retailers have this diamond

Prices start from $2,792 NZDSave up to $6,591 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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