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Heart|Lab Grown|IGI

3.51ct D FL Heart Lab Grown Diamond

EX • D/FL • IGI LG792676493

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG792676493

Diamond specifications and retailer prices

From $7,436 NZD
$4,191 USD
As of October 30, 2026
Save $20,474 NZD (73%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $27,910 NZD at Brilliant Earth · As of October 31, 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 LG792676493 or 792676493. Listed at 15 retailers as of October 30, 2026, with prices from $7,436 to $27,910, a $20,474 spread on the same certified stone. Brilliant Earth lists it at $27,910. 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
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG792676493
Dimensions9.55 × 10.55 × 6.07 mm
L/W Ratio1.10
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
Top View
9.55 mm10.55 mm3.51 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG792676493
Side View
Table 63.0%Crown 34.9°Girdle: THN-STKPavilion 41.3°Culet: NoneDepth 57.5%

Caratlytics Score

How it works →
A
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: $27,910 NZD|Low: $7,436 NZD|High: $29,844 NZD|Avg: $15,671 NZD|-6.5%
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
October 31, 2026
Retailer 6$7,436 NZD
Retailer 5$7,834 NZD
Retailer 7$7,867 NZD
Retailer 12$8,471 NZD
Retailer 4$9,342 NZD
Retailer 9$9,588 NZD
Retailer 3$11,533 NZD
Retailer 8$12,626 NZD
Retailer 14$16,869 NZD
Retailer 11$18,153 NZD
Retailer 13$18,186 NZD
Retailer 2$25,447 NZD
Retailer 10$26,856 NZD
Brilliant Earth$27,910 NZD

42 data points across 14 retailers

15 retailers$7,436 NZD to $27,910 NZD

A
Cheapest Retailer
-
$7,436 NZD
$4,191 USD
Retailer 2
-
$7,834 NZD
$4,415 USD
View
Price last confirmed 19 days ago
B+
Retailer 3
-
$7,867 NZD
$4,434 USD
View
B+
Retailer 4
-
$8,471 NZD
HK$37,300 HKD
View
B+
Retailer 5
-
$9,342 NZD
$5,265 USD
View
B+
Retailer 6
-
$9,588 NZD
£4,255 GBP
View
B+
Retailer 7
-
$11,533 NZD
$6,500 USD
View
B+
Retailer 8
-
$12,626 NZD
€6,777 EUR
View
B+
Retailer 9
-
$16,869 NZD
£7,486 GBP
View
B+
Retailer 10
-
$17,328 NZD
$9,766 USD
View
B
Retailer 11
-
$18,153 NZD
$10,231 USD
View
B+
Retailer 12
-
$18,186 NZD
ZAR 165,588 ZAR
View
B
Retailer 13
-
$25,447 NZD
$14,342 USD
View
B
Retailer 14
-
$26,856 NZD
$15,136 USD
View
Most Expensive
B
Brilliant Earth
19356652A · Oct 31
$27,910 NZD
$15,730 USD
View
14 more retailers have this diamond
Prices start from $7,436 NZDSave up to $20,474 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.

A
3.51ct Heart
$7,436 NZD