Heart|Lab Grown|IGI

3.51ct D FL Heart Lab Grown Diamond

EX • D/FL • IGI LG800611924

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG800611924

Diamond specifications and retailer prices

From $6,938 NZD

$3,910 USD

As of October 30, 2026

Save $22,906 NZD (77%) vs most expensive(unlock to see where)

22 retailers carry this diamond

Most expensive: $29,844 NZD at Brilliant Earth · As of October 30, 2026

View at Brilliant Earth

About this 3.51ct lab-grown heart diamond

This 3.51ct lab-grown heart sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG800611924 or 800611924. Listed at 22 retailers as of October 30, 2026, with prices from $6,938 to $29,844, a $22,906 spread on the same certified stone. Brilliant Earth lists it at $29,844. 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

3.51

Carat

Colour

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle33.7°

Pavilion angle40.9°

OriginLab Grown

Grading LabIGI

CertificateIGI LG800611924

Dimensions10.55 × 9.35 × 6.17 mm

L/W Ratio1.13

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 LG800611924

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: $29,844 NZD|Low: $6,661 NZD|High: $32,744 NZD|Avg: $15,087 NZD

Brilliant Earth

Retailer 2

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Retailer 5

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Retailer 20

October 31, 2026

Retailer 5$6,938 NZD

Retailer 2$7,271 NZD

Retailer 9$7,271 NZD

Retailer 10$7,622 NZD

Retailer 6$8,048 NZD

Retailer 8$8,110 NZD

Retailer 4$8,153 NZD

Retailer 17$8,857 NZD

Retailer 3$9,416 NZD

Retailer 13$9,762 NZD

Retailer 7$10,057 NZD

Retailer 20$11,861 NZD

Retailer 19$17,333 NZD

Retailer 18$18,686 NZD

Retailer 16$18,950 NZD

Retailer 11$23,441 NZD

Retailer 15$25,603 NZD

Retailer 14$28,045 NZD

Retailer 12$28,519 NZD

Brilliant Earth$29,844 NZD

41 data points across 20 retailers

22 retailers$6,938 NZD to $29,844 NZD

Cheapest Retailer

$6,938 NZD

$3,910 USD

Retailer 2

$7,271 NZD

$4,098 USD

View

Final sale: no returns

Retailer 3

$7,271 NZD

$4,098 USD

View

B+

Retailer 4

$7,622 NZD

$4,296 USD

View

Retailer 5

$8,048 NZD

$4,536 USD

View

Price last confirmed 19 days ago

B+

Retailer 6

$8,048 NZD

$4,536 USD

View

B+

Retailer 7

$8,110 NZD

$4,571 USD

View

B+

Retailer 8

$8,153 NZD

$4,595 USD

View

B+

Retailer 9

$8,857 NZD

HK$39,000 HKD

View

B+

Retailer 10

$9,416 NZD

$5,307 USD

View

B+

Retailer 11

$9,762 NZD

£4,332 GBP

View

B+

Retailer 12

$10,057 NZD

$5,668 USD

View

B+

Retailer 13

$11,861 NZD

$6,685 USD

View

B+

Retailer 14

$17,333 NZD

£7,692 GBP

View

B+

Retailer 15

$18,094 NZD

$10,198 USD

View

B+

Retailer 16

$18,686 NZD

ZAR 170,136 ZAR

View

Retailer 17

$18,950 NZD

$10,680 USD

View

Retailer 18

$23,441 NZD

$13,212 USD

View

Retailer 19

$25,603 NZD

SGD 19,500 SGD

View

Retailer 20

$28,045 NZD

$15,806 USD

View

Retailer 21

$28,519 NZD

$16,073 USD

View

Most Expensive

Brilliant Earth

20146746A · Oct 30

$29,844 NZD

$16,820 USD

View

21 more retailers have this diamond

Prices start from $6,938 NZDSave up to $22,906 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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3.51ct Heart

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