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Heart|Lab Grown|IGI

1.15ct E SI1 Heart Lab Grown Diamond

EX • E/SI1 • IGI LG839668121

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG839668121

Diamond specifications and retailer prices

From €153 EUR
$171 USD
As of October 30, 2026
Save €545 EUR (78%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: €698 EUR at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.15ct lab-grown heart diamond

This 1.15ct lab-grown heart sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG839668121 or 839668121. Listed at 3 retailers as of October 30, 2026, with prices from €153 to €698, a €545 spread on the same certified stone. Brilliant Earth lists it at €698. 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

1.15
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle40°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839668121
Dimensions6.17 × 7.22 × 4.38 mm
L/W Ratio1.17
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.17 mm7.22 mm1.15 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839668121
Side View
Table 56.0%Crown 36.1°Girdle: MED-STKPavilion 40°Culet: NoneDepth 60.7%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: €698 EUR|Low: €153 EUR|High: €913 EUR|Avg: €507 EUR|-23.5%
Brilliant Earth
Retailer 2
Retailer 3
October 31, 2026
Retailer 3€153 EUR
Retailer 2€305 EUR
Brilliant Earth€698 EUR

28 data points across 3 retailers

3 retailers€153 EUR to €698 EUR

A
Cheapest Retailer
-
€153 EUR
$171 USD
Final sale: no returns
A
Retailer 2
-
€305 EUR
£268 GBP
View
Most Expensive
B
Brilliant Earth
21601484A · Oct 30
€698 EUR
$780 USD
View
2 more retailers have this diamond
Prices start from €153 EURSave up to €545 EUR

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
1.15ct Heart
€153 EUR