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Heart|Lab Grown|IGI

0.51ct D IF Heart Lab Grown Diamond

VG • D/IF • IGI LG840618247

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG840618247

Diamond specifications and retailer prices

From $383 NZD
As of November 5, 2026
Save $1,597 NZD (81%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $1,980 NZD at MOH London · As of November 5, 2026
View at MOH London

About this 0.51ct lab-grown heart diamond

This 0.51ct lab-grown heart sits in the half to three-quarter carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG840618247 or 840618247. Listed at 5 retailers as of November 5, 2026, with prices from $383 to $1,980, a $1,597 spread on the same certified stone. MOH London lists it at $1,980. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
D
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle36.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840618247
Dimensions4.85 × 5.39 × 3.11 mm
L/W Ratio1.11
Girdle conditionFaceted
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
4.85 mm5.39 mm0.51 ctD / IF
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840618247
Side View
Table 60.0%Crown 36.1°Girdle: Very ThickPavilion 36.3°CuletDepth 57.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $1,980 NZD|Low: $383 NZD|High: $1,980 NZD|Avg: $1,079 NZD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 5, 2026
Retailer 3$383 NZD
Retailer 2$426 NZD
Retailer 4$766 NZD
Retailer 5$1,460 NZD
MOH London$1,980 NZD

2 data points across 5 retailers

5 retailers$383 NZD to $1,980 NZD

A
Cheapest Retailer
-
$383 NZD
Final sale: no returns
A
Retailer 2
-
$426 NZD
View
B+
Retailer 3
-
$766 NZD
View
B
Retailer 4
-
$1,460 NZD
View
Most Expensive
B
MOH London
LG840618247 · Nov 5
$1,980 NZD
£879 GBP
View
4 more retailers have this diamond
Prices start from $383 NZDSave up to $1,597 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
0.51ct Heart
$383 NZD