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Heart|Lab Grown|IGI

1.39ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG575368237

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG575368237

Diamond specifications and retailer prices

From £142 GBP
As of November 6, 2026
Save £1,218 GBP (90%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,360 GBP at Do Amore Diamonds · As of November 6, 2026
View at Do Amore Diamonds

About this 1.39ct lab-grown heart diamond

This 1.39ct lab-grown heart sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG575368237 or 575368237. Listed at 13 retailers as of November 6, 2026, with prices from £142 to £1,360, a £1,218 spread on the same certified stone. Do Amore Diamonds lists it at £1,360. 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

1.39
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG575368237
Dimensions7.72 × 6.59 × 4.72 mm
L/W Ratio1.17
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.72 mm6.59 mm1.39 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG575368237
Side View
Table 57.5%Crown 36.3°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 61.1%

Caratlytics Score

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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: £354 GBP|Low: £103 GBP|High: £1,113 GBP|Avg: £394 GBP|+3.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 5£103 GBP
Retailer 8£142 GBP
Retailer 2£158 GBP
Retailer 12£164 GBP
Retailer 9£176 GBP
Retailer 13£176 GBP
Retailer 11£309 GBP
Retailer 1£354 GBP
Retailer 3£421 GBP
Retailer 7£567 GBP
Retailer 10£624 GBP
Retailer 6£775 GBP
Retailer 4£1,113 GBP

45 data points across 13 retailers

13 retailers£142 GBP to £1,360 GBP

A
Cheapest Retailer
-
£142 GBP
A
Retailer 2
-
£158 GBP
View
Final sale: no returns
A
Retailer 3
-
£164 GBP
View
A
Retailer 4
-
£176 GBP
View
Retailer 5
-
£176 GBP
View
Price last confirmed 12 days ago
A
Retailer 6
-
£296 GBP
View
B+
Retailer 7
-
£309 GBP
View
B+
Retailer 8
-
£354 GBP
View
B+
Retailer 9
-
£421 GBP
View
B
Retailer 10
-
£567 GBP
View
B
Retailer 11
-
£624 GBP
View
B
Retailer 12
-
£775 GBP
View
Most Expensive
B
Do Amore Diamonds
27-05760F5F2 · Nov 6
£1,360 GBP
$1,820 USD
View
12 more retailers have this diamond
Prices start from £142 GBPSave up to £1,218 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
1.39ct Heart
£142 GBP