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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 £115 GBP
$154 USD
As of November 1, 2026
Save £547 GBP (83%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £662 GBP 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 £115 to £662, a £547 spread on the same certified stone. MOH London lists it at £662. 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
Colour
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: £662 GBP|Low: £115 GBP|High: £822 GBP|Avg: £290 GBP|-18.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 6£115 GBP
Retailer 3£170 GBP
Retailer 2£171 GBP
Retailer 4£217 GBP
Retailer 5£333 GBP
MOH London£662 GBP

40 data points across 6 retailers

6 retailers£115 GBP to £662 GBP

A
Cheapest Retailer
-
£115 GBP
$154 USD
A
Retailer 2
-
£170 GBP
€217 EUR
View
A
Retailer 3
-
£171 GBP
View
B+
Retailer 4
-
£217 GBP
View
B
Retailer 5
-
£333 GBP
$447 USD
View
Most Expensive
B
MOH London
LG741558725 · Nov 1
£662 GBP
View
5 more retailers have this diamond
Prices start from £115 GBPSave up to £547 GBP

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
£115 GBP