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Heart|Lab Grown|IGI

1.00ct K SI1 Heart Lab Grown Diamond

ID • K/SI1 • IGI LG797647618

Shape and cutting style on the report: Heart modified brilliant

Certificate IGI LG797647618

Diamond specifications and retailer prices

From €315 EUR
As of November 6, 2026
Save €824 EUR (72%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €1,140 EUR at MOH London · As of November 1, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG797647618 or 797647618. Listed at 5 retailers as of November 1, 2026, with prices from €315 to €1,140, a €824 spread on the same certified stone. MOH London lists it at €1,140. 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
K
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.8°
Pavilion angle26.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG797647618
Dimensions6.77 × 5.63 × 3.36 mm
L/W Ratio1.20
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.77 mm5.63 mm1.00 ctK / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG797647618
Side View
Table 71.0%Crown 31.8°Girdle: THK-VTKPavilion 26.9°Culet: NoneDepth 49.6%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: €1,140 EUR|Low: €315 EUR|High: €1,145 EUR|Avg: €618 EUR|+22.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 5€315 EUR
Retailer 6€410 EUR
Retailer 2€425 EUR
Retailer 3€569 EUR
Retailer 4€873 EUR
MOH London€1,140 EUR

11 data points across 6 retailers

5 retailers€315 EUR to €1,140 EUR

B+
Cheapest Retailer
-
€315 EUR
B+
Retailer 2
-
€425 EUR
View
B+
Retailer 3
-
€569 EUR
View
B
Retailer 4
-
€873 EUR
View
Most Expensive
B
MOH London
LG797647618 · Nov 1
€1,140 EUR
£1,002 GBP
View
4 more retailers have this diamond
Prices start from €315 EURSave up to €824 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
€315 EUR