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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 €199 EUR
£175 GBP
As of November 1, 2026
Save €579 EUR (74%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: €779 EUR at MOH London · As of November 1, 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 1, 2026, with prices from €199 to €779, a €579 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
Color
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 1
Current: €779 EUR|Low: €199 EUR|High: €788 EUR|Avg: €420 EUR|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 2€199 EUR
Retailer 3€287 EUR
Retailer 7€306 EUR
Retailer 4€316 EUR
Retailer 8€385 EUR
Retailer 5€566 EUR
Retailer 6€573 EUR
MOH London€779 EUR

39 data points across 8 retailers

15 retailers€199 EUR to €779 EUR

Retailer 1
-
€129 EUR
$144 USD
Price last confirmed 30 days ago
Retailer 2
-
€156 EUR
$174 USD
View
Price last confirmed 33 days ago
Retailer 3
-
€166 EUR
$186 USD
View
Price last confirmed 29 days ago
Retailer 4
-
€166 EUR
$186 USD
View
Price last confirmed 24 days ago
A
Retailer 5
-
€199 EUR
£175 GBP
View
B+
Retailer 6
-
€287 EUR
£253 GBP
View
B+
Retailer 7
-
€287 EUR
$321 USD
View
B+
Retailer 8
-
€306 EUR
$342 USD
View
B+
Retailer 9
-
€316 EUR
£278 GBP
View
B+
Retailer 10
-
€385 EUR
$430 USD
View
Retailer 11
-
€535 EUR
$598 USD
View
Price last confirmed 31 days ago
B
Retailer 12
-
€563 EUR
£495 GBP
View
B
Retailer 13
-
€566 EUR
$632 USD
View
Retailer 14
-
€573 EUR
$640 USD
View
Price last confirmed 11 days ago
Most Expensive
B
MOH London
LG621434474 · Nov 1
€779 EUR
£685 GBP
View
14 more retailers have this diamond
Prices start from €199 EURSave up to €579 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
€199 EUR