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Heart|Lab Grown|IGI

1.01ct D SI1 Heart Lab Grown Diamond

ID • D/SI1 • IGI LG621434474

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG621434474

Diamond specifications and retailer prices

From €198 EUR
As of November 6, 2026
Save €581 EUR (75%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €779 EUR at MOH London · As of November 2, 2026
View at MOH London

About this 1.01ct lab-grown heart diamond

This 1.01ct 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 LG621434474 or 621434474. Listed at 15 retailers as of November 2, 2026, with prices from €198 to €779, a €581 spread on the same certified stone. MOH London lists it at €779. 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

1.01
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle36.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG621434474
Dimensions6.12 × 7.19 × 3.89 mm
L/W Ratio1.17
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.12 mm7.19 mm1.01 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG621434474
Side View
Table 61.0%Crown 34.2°Girdle: MED-VTKPavilion 36.3°Culet: NoneDepth 54.1%

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: €779 EUR|Low: €198 EUR|High: €788 EUR|Avg: €420 EUR
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 2€198 EUR
Retailer 3€286 EUR
Retailer 7€306 EUR
Retailer 5€316 EUR
Retailer 8€385 EUR
Retailer 4€433 EUR
Retailer 6€573 EUR
MOH London€779 EUR

41 data points across 8 retailers

15 retailers€198 EUR to €779 EUR

Retailer 1
-
€129 EUR
Price last confirmed 35 days ago
Retailer 2
-
€156 EUR
View
Price last confirmed 38 days ago
Retailer 3
-
€167 EUR
View
Price last confirmed 34 days ago
Retailer 4
-
€167 EUR
View
Price last confirmed 29 days ago
A
Retailer 5
-
€198 EUR
View
B+
Retailer 6
-
€286 EUR
View
B+
Retailer 7
-
€288 EUR
View
B+
Retailer 8
-
€306 EUR
View
B+
Retailer 9
-
€316 EUR
View
B+
Retailer 10
-
€385 EUR
View
B
Retailer 11
-
€433 EUR
View
Retailer 12
-
€536 EUR
View
Price last confirmed 37 days ago
B
Retailer 13
-
€563 EUR
View
B
Retailer 14
-
€573 EUR
View
Most Expensive
B
MOH London
LG621434474 · Nov 2
€779 EUR
£685 GBP
View
14 more retailers have this diamond
Prices start from €198 EURSave up to €581 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
1.01ct Heart
€198 EUR