CaratHunter
Plans
Heart|Lab Grown|IGI

1.03ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG818671734

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG818671734

Diamond specifications and retailer prices

From €343 EUR
As of November 3, 2026
Save €1,146 EUR (77%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €1,489 EUR at MOH London · As of November 3, 2026
View at MOH London

About this 1.03ct lab-grown heart diamond

This 1.03ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818671734 or 818671734. Listed at 18 retailers as of November 3, 2026, with prices from €343 to €1,489, a €1,146 spread on the same certified stone. MOH London lists it at €1,489. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.03
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818671734
Dimensions6.33 × 6.96 × 4.06 mm
L/W Ratio1.10
Girdle conditionFaceted
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
6.33 mm6.96 mm1.03 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818671734
Side View
Table 58.0%Crown 34.6°Girdle: MED-STKPavilion 38.2°Culet: NoneDepth 58.3%

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: Nov 3
Current: €1,489 EUR|Low: €343 EUR|High: €1,712 EUR|Avg: €896 EUR|-12.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 5, 2026
Retailer 4€343 EUR
Retailer 5€461 EUR
Retailer 9€515 EUR
Retailer 11€537 EUR
Retailer 13€549 EUR
Retailer 2€580 EUR
Retailer 8€612 EUR
Retailer 7€657 EUR
Retailer 3€866 EUR
Retailer 10€937 EUR
Retailer 6€1,102 EUR
Retailer 12€1,472 EUR
MOH London€1,489 EUR

39 data points across 13 retailers

18 retailers€343 EUR to €1,489 EUR

A
Cheapest Retailer
-
€343 EUR
Final sale: no returns
Retailer 2
-
€370 EUR
View
Price last confirmed 28 days ago
Retailer 3
-
€416 EUR
View
Price last confirmed 37 days ago
Retailer 4
-
€454 EUR
View
Price last confirmed 41 days ago
Retailer 5
-
€459 EUR
View
Price last confirmed 33 days ago
Retailer 6
-
€459 EUR
View
Price last confirmed 24 days ago
A
Retailer 7
-
€515 EUR
View
B+
Retailer 8
-
€537 EUR
View
B+
Retailer 9
-
€549 EUR
View
B+
Retailer 10
-
€580 EUR
View
B+
Retailer 11
-
€612 EUR
View
B+
Retailer 12
-
€657 EUR
View
B+
Retailer 13
-
€866 EUR
View
B+
Retailer 14
-
€937 EUR
View
B+
Retailer 15
-
€1,102 EUR
View
B
Retailer 16
-
€1,472 EUR
View
Retailer 17
-
€1,475 EUR
View
Price last confirmed 31 days ago
Most Expensive
B
MOH London
LG818671734 · Nov 3
€1,489 EUR
£1,321 GBP
View
17 more retailers have this diamond
Prices start from €343 EURSave up to €1,146 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
1.03ct Heart
€343 EUR