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Heart|Lab Grown|IGI

1.00ct D SI1 Heart Lab Grown Diamond

ID • D/SI1 • IGI LG842625301

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG842625301

Diamond specifications and retailer prices

From €251 EUR
£221 GBP
As of October 31, 2026
Save €995 EUR (80%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €1,246 EUR at MOH London · As of October 29, 2026
View at MOH London

About this 1ct lab-grown heart diamond

This 1ct 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 LG842625301 or 842625301. Listed at 5 retailers as of October 29, 2026, with prices from €251 to €1,246, a €995 spread on the same certified stone. MOH London lists it at €1,246. 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG842625301
Dimensions7.05 × 6.28 × 3.87 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
7.05 mm6.28 mm1.00 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG842625301
Side View
Table 60.0%Crown 34.4°Girdle: THK-VTKPavilion 37.7°Culet: NoneDepth 54.9%

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 31
Current: €1,246 EUR|Low: €243 EUR|High: €1,246 EUR|Avg: €433 EUR|+45.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 31, 2026
Retailer 2€251 EUR
Retailer 4€277 EUR
Retailer 5€280 EUR
Retailer 3€282 EUR
MOH London€1,246 EUR

18 data points across 5 retailers

5 retailers€251 EUR to €1,246 EUR

A
Cheapest Retailer
-
€251 EUR
£221 GBP
B+
Retailer 2
-
€277 EUR
$310 USD
View
B+
Retailer 3
-
€280 EUR
$313 USD
View
B+
Retailer 4
-
€282 EUR
£248 GBP
View
Most Expensive
C
MOH London
LG842625301 · Oct 29
€1,246 EUR
£1,096 GBP
View
4 more retailers have this diamond
Prices start from €251 EURSave up to €995 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
€251 EUR