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Heart|Lab Grown|IGI

0.51ct D SI1 Heart Lab Grown Diamond

ID • D/SI1 • IGI LG741558725

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG741558725

Diamond specifications and retailer prices

From $154 USD
As of November 1, 2026
Save $732 USD (83%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $886 USD at MOH London · As of November 1, 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 SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG741558725 or 741558725. Listed at 6 retailers as of November 1, 2026, with prices from $154 to $886, a $732 spread on the same certified stone. MOH London lists it at $886. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
D
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle39.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG741558725
Dimensions5.07 × 5.60 × 3.13 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.07 mm5.60 mm0.51 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG741558725
Side View
Table 57.0%Crown 34.6°Girdle: MED-STKPavilion 39.1°Culet: NoneDepth 55.9%

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 1
Current: $886 USD|Low: $154 USD|High: $1,101 USD|Avg: $386 USD|-18.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 6$154 USD
Retailer 3$228 USD
Retailer 2$230 USD
Retailer 4$291 USD
Retailer 5$447 USD
MOH London$886 USD

41 data points across 6 retailers

6 retailers$154 USD to $886 USD

A
Cheapest Retailer
-
$154 USD
A
Retailer 2
-
$228 USD
€217 EUR
View
A
Retailer 3
-
$230 USD
£181 GBP
View
B+
Retailer 4
-
$291 USD
£229 GBP
View
B
Retailer 5
-
$447 USD
View
Most Expensive
B
MOH London
LG741558725 · Nov 1
$886 USD
£698 GBP
View
5 more retailers have this diamond
Prices start from $154 USDSave up to $732 USD

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
$154 USD