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Heart|Lab Grown|IGI

3.86ct E SI1 Heart Lab Grown Diamond

EX • E/SI1 • IGI LG844677161

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG844677161

Diamond specifications and retailer prices

From £365 GBP
$489 USD
As of October 29, 2026
Save £3,934 GBP (92%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £4,299 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 3.86ct lab-grown heart diamond

This 3.86ct lab-grown heart sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG844677161 or 844677161. Listed at 3 retailers as of October 28, 2026, with prices from £365 to £4,299, a £3,934 spread on the same certified stone. Brilliant Earth lists it at £4,299. 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

3.86
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844677161
Dimensions9.61 × 10.95 × 6.37 mm
L/W Ratio1.14
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.61 mm10.95 mm3.86 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844677161
Side View
Table 56.0%Crown 34.5°Girdle: STK-THKPavilion 38.7°Culet: NoneDepth 58.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: £4,299 GBP|Low: £365 GBP|High: £4,306 GBP|Avg: £2,035 GBP|-0.2%
Brilliant Earth
Retailer 2
Retailer 3
October 29, 2026
Retailer 2£365 GBP
Retailer 3£691 GBP
Brilliant Earth£4,299 GBP

14 data points across 3 retailers

3 retailers£365 GBP to £4,299 GBP

A
Cheapest Retailer
-
£365 GBP
$489 USD
Final sale: no returns
A
Retailer 2
-
£691 GBP
View
Most Expensive
B
Brilliant Earth
22136284A · Oct 28
£4,299 GBP
$5,760 USD
View
2 more retailers have this diamond
Prices start from £365 GBPSave up to £3,934 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
3.86ct Heart
£365 GBP