Heart|Lab Grown|IGI

1.05ct D SI1 Heart Lab Grown Diamond

EX • D/SI1 • IGI LG842651671

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG842651671

Diamond specifications and retailer prices

From €166 EUR
$185 USD
As of October 30, 2026
Save €434 EUR (72%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: €600 EUR at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 1.05ct lab-grown heart diamond

This 1.05ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG842651671 or 842651671. Listed at 3 retailers as of October 30, 2026, with prices from €166 to €600, a €434 spread on the same certified stone. Brilliant Earth lists it at €600. 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

1.05
Carat
D
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG842651671
Dimensions6.23 × 6.98 × 4.15 mm
L/W Ratio1.12
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.23 mm6.98 mm1.05 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG842651671
Side View
Table 58.0%Crown 33.5°Girdle: MED-STKPavilion 39.6°Culet: NoneDepth 59.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 30
Current: €600 EUR|Low: €166 EUR|High: €949 EUR|Avg: €547 EUR|-36.8%
Brilliant Earth
Retailer 2
Retailer 3
October 31, 2026
Retailer 3€166 EUR
Retailer 2€337 EUR
Brilliant Earth€600 EUR

22 data points across 3 retailers

3 retailers€166 EUR to €600 EUR

A
Cheapest Retailer
-
€166 EUR
$185 USD
Final sale: no returns
B+
Retailer 2
-
€337 EUR
£296 GBP
View
Most Expensive
B
Brilliant Earth
21744055A · Oct 30
€600 EUR
$670 USD
View
2 more retailers have this diamond
Prices start from €166 EURSave up to €434 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
1.05ct Heart
€166 EUR