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Heart|Lab Grown|IGI

1.78ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG776643289

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG776643289

Diamond specifications and retailer prices

From $580 NZD
$327 USD
As of October 30, 2026
Save $2,239 NZD (79%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,819 NZD at MOH London · As of October 26, 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 LG776643289 or 776643289. Listed at 11 retailers as of October 26, 2026, with prices from $580 to $2,819, a $2,239 spread on the same certified stone. MOH London lists it at $2,819. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle42.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG776643289
Dimensions7.25 × 8.46 × 5.06 mm
L/W Ratio1.17
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
7.25 mm8.46 mm1.78 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG776643289
Side View
Table 63.0%Crown 37°Girdle: MED-THKPavilion 42.4°Culet: NoneDepth 59.8%

Caratlytics Score

How it works →
A+
Exceptional
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: $2,819 NZD|Low: $493 NZD|High: $3,029 NZD|Avg: $1,384 NZD|-5.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 31, 2026
Retailer 6$580 NZD
Retailer 3$692 NZD
Retailer 11$692 NZD
Retailer 8$763 NZD
Retailer 2$1,162 NZD
Retailer 7$1,166 NZD
Retailer 5$1,194 NZD
Retailer 9$1,725 NZD
Retailer 4$2,111 NZD
Retailer 10$2,379 NZD
MOH London$2,819 NZD

38 data points across 11 retailers

11 retailers$580 NZD to $2,819 NZD

A+
Cheapest Retailer
-
$580 NZD
$327 USD
A
Retailer 2
-
$692 NZD
$390 USD
View
Final sale: no returns
A
Retailer 3
-
$692 NZD
$390 USD
View
A
Retailer 4
-
$763 NZD
£339 GBP
View
A
Retailer 5
-
$1,162 NZD
$655 USD
View
A
Retailer 6
-
$1,166 NZD
$657 USD
View
A
Retailer 7
-
$1,194 NZD
$673 USD
View
A
Retailer 8
-
$1,725 NZD
A$1,496 AUD
View
A
Retailer 9
-
$2,111 NZD
$1,190 USD
View
B+
Retailer 10
-
$2,379 NZD
$1,341 USD
View
Most Expensive
B+
MOH London
LG776643289 · Oct 26
$2,819 NZD
£1,251 GBP
View
10 more retailers have this diamond
Prices start from $580 NZDSave up to $2,239 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
$580 NZD