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Heart|Lab Grown|IGI

0.50ct D SI1 Heart Lab Grown Diamond

ID • D/SI1 • IGI LG709526554

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG709526554

Diamond specifications and retailer prices

From £197 GBP
As of October 31, 2026
Save £74 GBP (27%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £833 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 0.5ct lab-grown heart diamond

This 0.5ct 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 LG709526554 or 709526554. Listed at 5 retailers as of October 30, 2026, with a 37% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

0.50
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle36.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG709526554
Dimensions4.92 × 5.55 × 3.11 mm
L/W Ratio1.13
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
4.92 mm5.55 mm0.50 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG709526554
Side View
Table 62.0%Crown 32°Girdle: THK-VTKPavilion 36.9°Culet: NoneDepth 56.0%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £833 GBP|Low: £178 GBP|High: £839 GBP|Avg: £335 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 31, 2026
Retailer 2£197 GBP
Retailer 4£199 GBP
Retailer 3£240 GBP
Retailer 5£271 GBP
MOH London£833 GBP

43 data points across 5 retailers

5 retailers£197 GBP to £271 GBP

B+
Cheapest Retailer
-
£197 GBP
B+
Retailer 2
-
£199 GBP
$266 USD
View
B+
Retailer 3
-
£240 GBP
View
B+
Retailer 4
-
£271 GBP
$363 USD
View
Most Expensive
MOH London
LG709526554 · Oct 29
£833 GBP
View
Price under review
4 more retailers have this diamond
Prices start from £197 GBPSave up to £74 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.

B+
0.50ct Heart
£197 GBP