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Heart|Lab Grown|IGI

1.00ct E SI1 Heart Lab Grown Diamond

VG • E/SI1 • IGI LG839608663

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG839608663

Diamond specifications and retailer prices

From €151 EUR
$168 USD
As of October 28, 2026
Save €640 EUR (81%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: €790 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 very-good cut grade and certified by IGI LG839608663 or 839608663. Listed at 3 retailers as of October 28, 2026, with prices from €151 to €790, a €640 spread on the same certified stone. Brilliant Earth lists it at €790. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.00
Carat
E
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839608663
Dimensions6.08 × 7.10 × 4.04 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
6.08 mm7.10 mm1.00 ctE / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839608663
Side View
Table 60.0%Crown 34.1°Girdle: STK-THKPavilion 38.7°Culet: NoneDepth 56.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28
Current: €790 EUR|Low: €151 EUR|High: €817 EUR|Avg: €515 EUR|-3.3%
Brilliant Earth
Retailer 2
Retailer 3
October 28, 2026
Retailer 2€151 EUR
Retailer 3€301 EUR
Brilliant Earth€790 EUR

28 data points across 3 retailers

3 retailers€151 EUR to €790 EUR

A
Cheapest Retailer
-
€151 EUR
$168 USD
Final sale: no returns
B+
Retailer 2
-
€301 EUR
£264 GBP
View
Most Expensive
B
Brilliant Earth
21542097A · Oct 28
€790 EUR
$880 USD
View
2 more retailers have this diamond
Prices start from €151 EURSave up to €640 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
€151 EUR