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Heart|Lab Grown|IGI

1.00ct E SI1 Heart Lab Grown Diamond

ID • E/SI1 • IGI LG837666974

Certificate IGI LG837666974

Diamond specifications and retailer prices

From €282 EUR
As of October 27, 2026
Save €465 EUR (62%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: €747 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG837666974 or 837666974. Listed at 4 retailers as of October 27, 2026, with prices from €282 to €747, a €465 spread on the same certified stone. MOH London lists it at €747. 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
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG837666974
Dimensions6.33 × 6.81 × 3.97 mm
L/W Ratio1.08
Top View
6.33 mm6.81 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837666974
Side View
Table 69.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 58.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: €747 EUR|Low: €282 EUR|High: €747 EUR|Avg: €365 EUR
MOH London
Retailer 2
Retailer 3
Retailer 4
October 29, 2026
Retailer 4€282 EUR
Retailer 3€295 EUR
Retailer 2€446 EUR
MOH London€747 EUR

4 data points across 4 retailers

4 retailers€282 EUR to €747 EUR

B+
Cheapest Retailer
-
€282 EUR
B+
Retailer 2
-
€295 EUR
$328 USD
View
B
Retailer 3
-
€446 EUR
$496 USD
View
Most Expensive
B
MOH London
LG837666974 · Oct 29
€747 EUR
£655 GBP
View
3 more retailers have this diamond
Prices start from €282 EURSave up to €465 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.

B+
1.00ct Heart
€282 EUR