CaratHunter
Plans
Heart|Lab Grown|IGI

1.78ct D IF Heart Lab Grown Diamond

EX • D/IF • IGI LG616411534

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG616411534

Diamond specifications and retailer prices

From $727 NZD
$410 USD
As of November 1, 2026
Save $2,423 NZD (77%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $3,150 NZD at MOH London · As of November 1, 2026
View at MOH London

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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG616411534 or 616411534. Listed at 20 retailers as of November 1, 2026, with prices from $727 to $3,150, a $2,423 spread on the same certified stone. MOH London lists it at $3,150. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.78
Carat
D
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.7°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG616411534
Dimensions7.26 × 8.42 × 4.99 mm
L/W Ratio1.16
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
7.26 mm8.42 mm1.78 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG616411534
Side View
Table 61.0%Crown 37.7°Girdle: THN-STKPavilion 39.3°Culet: NoneDepth 59.3%

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: Nov 1
Current: $3,150 NZD|Low: $727 NZD|High: $3,550 NZD|Avg: $1,847 NZD|-10.6%
MOH London
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
November 2, 2026
Retailer 17$727 NZD
Retailer 7$765 NZD
Retailer 10$853 NZD
Retailer 6$947 NZD
Retailer 9$947 NZD
Retailer 16$1,288 NZD
Retailer 14$1,409 NZD
Retailer 8$1,437 NZD
Retailer 2$1,455 NZD
Retailer 5$2,225 NZD
Retailer 12$2,365 NZD
Retailer 13$2,447 NZD
Retailer 11$2,592 NZD
Retailer 4$2,663 NZD
Retailer 15$3,048 NZD
Retailer 3$3,061 NZD
MOH London$3,150 NZD

40 data points across 17 retailers

20 retailers$727 NZD to $3,150 NZD

A
Cheapest Retailer
-
$727 NZD
$410 USD
Final sale: no returns
Retailer 2
-
$765 NZD
$431 USD
View
Price last confirmed 32 days ago
A
Retailer 3
-
$765 NZD
$431 USD
View
A
Retailer 4
-
$853 NZD
£378 GBP
View
Retailer 5
-
$857 NZD
$483 USD
View
Price last confirmed 34 days ago
Retailer 6
-
$937 NZD
$528 USD
View
Price last confirmed 37 days ago
Retailer 7
-
$947 NZD
$534 USD
View
Price last confirmed 7 days ago
Retailer 8
-
$947 NZD
$534 USD
View
Price last confirmed 7 days ago
A
Retailer 9
-
$1,288 NZD
$726 USD
View
A
Retailer 10
-
$1,409 NZD
$794 USD
View
A
Retailer 11
-
$1,437 NZD
$810 USD
View
A
Retailer 12
-
$1,455 NZD
£646 GBP
View
Retailer 13
-
$2,225 NZD
A$1,929 AUD
View
Price last confirmed 13 days ago
B+
Retailer 14
-
$2,365 NZD
$1,333 USD
View
B+
Retailer 15
-
$2,447 NZD
$1,379 USD
View
B+
Retailer 16
-
$2,592 NZD
$1,461 USD
View
B+
Retailer 17
-
$2,663 NZD
$1,501 USD
View
B+
Retailer 18
-
$3,048 NZD
$1,718 USD
View
B+
Retailer 19
-
$3,061 NZD
$1,725 USD
View
Most Expensive
B+
MOH London
LG616411534 · Nov 1
$3,150 NZD
£1,398 GBP
View
19 more retailers have this diamond
Prices start from $727 NZDSave up to $2,423 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
1.78ct Heart
$727 NZD