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Heart|Lab Grown|IGI

1.00ct E SI1 Heart Lab Grown Diamond

EX • E/SI1 • IGI LG840658719

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG840658719

Diamond specifications and retailer prices

From €150 EUR
$168 USD
As of October 30, 2026
Save €637 EUR (81%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: €788 EUR at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 1ct lab-grown heart diamond

This 1ct 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 LG840658719 or 840658719. Listed at 3 retailers as of October 28, 2026, with prices from €150 to €788, a €637 spread on the same certified stone. Brilliant Earth lists it at €788. 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

1.00
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840658719
Dimensions6.13 × 6.95 × 4.14 mm
L/W Ratio1.13
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.13 mm6.95 mm1.00 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840658719
Side View
Table 58.0%Crown 35.8°Girdle: MED-STKPavilion 39.8°Culet: NoneDepth 59.6%

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: Oct 30
Current: €788 EUR|Low: €150 EUR|High: €788 EUR|Avg: €476 EUR
Brilliant Earth
Retailer 2
Retailer 3
October 29, 2026
Retailer 3€150 EUR
Retailer 2€301 EUR
Brilliant Earth€788 EUR

25 data points across 3 retailers

3 retailers€150 EUR to €788 EUR

A
Cheapest Retailer
-
€150 EUR
$168 USD
Final sale: no returns
B+
Retailer 2
-
€301 EUR
£265 GBP
View
Most Expensive
B
Brilliant Earth
21623716A · Oct 28
€788 EUR
$880 USD
View
2 more retailers have this diamond
Prices start from €150 EURSave up to €637 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
1.00ct Heart
€150 EUR