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Heart|Lab Grown|IGI

1.52ct D SI1 Heart Lab Grown Diamond

ID • D/SI1 • IGI LG841644165

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG841644165

Diamond specifications and retailer prices

From £278 GBP
As of November 6, 2026
Save £425 GBP (60%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £832 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.52ct lab-grown heart diamond

This 1.52ct lab-grown heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG841644165 or 841644165. Listed at 6 retailers as of November 6, 2026, with a 153% 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

1.52
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle37.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG841644165
Dimensions7.89 × 7.69 × 4.34 mm
L/W Ratio1.03
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
7.89 mm7.69 mm1.52 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG841644165
Side View
Table 64.0%Crown 33.7°Girdle: STK-THKPavilion 37.6°Culet: NoneDepth 55.0%

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 6
Current: £832 GBP|Low: £278 GBP|High: £832 GBP|Avg: £475 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 6£278 GBP
Retailer 2£343 GBP
Retailer 4£378 GBP
Retailer 3£381 GBP
Retailer 5£703 GBP
MOH London£832 GBP

26 data points across 6 retailers

6 retailers£278 GBP to £703 GBP

B+
Cheapest Retailer
-
£278 GBP
A
Retailer 2
-
£343 GBP
View
B+
Retailer 3
-
£378 GBP
View
B+
Retailer 4
-
£381 GBP
View
B
Retailer 5
-
£703 GBP
View
Most Expensive
MOH London
LG841644165 · Oct 29
£832 GBP
View
Price last confirmed 8 days ago
5 more retailers have this diamond
Prices start from £278 GBPSave up to £425 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
1.52ct Heart
£278 GBP