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Heart|Lab Grown|IGI

1.09ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG818663190

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG818663190

Diamond specifications and retailer prices

From €313 EUR
As of November 5, 2026
Save €1,212 EUR (79%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: €1,555 EUR at NZ Jewellers · As of October 5, 2026
View at NZ Jewellers

About this 1.09ct lab-grown heart diamond

This 1.09ct 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 LG818663190 or 818663190. Listed at 17 retailers as of November 4, 2026, with a 387% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle38.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818663190
Dimensions6.35 × 7.16 × 4.09 mm
L/W Ratio1.13
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
6.35 mm7.16 mm1.09 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818663190
Side View
Table 59.0%Crown 35.5°Girdle: MED-STKPavilion 38.2°Culet: NoneDepth 57.1%

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 5
Current: €313 EUR|Low: €313 EUR|High: €1,802 EUR|Avg: €944 EUR|-28.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 1€313 EUR
Retailer 4€485 EUR
Retailer 9€537 EUR
Retailer 11€566 EUR
Retailer 2€605 EUR
Retailer 5€613 EUR
Retailer 8€691 EUR
Retailer 3€916 EUR
Retailer 10€992 EUR
Retailer 7€1,157 EUR
Retailer 6€1,388 EUR
Retailer 12€1,526 EUR

36 data points across 12 retailers

17 retailers€313 EUR to €1,526 EUR

A
Cheapest Retailer
-
€313 EUR
Final sale: no returns
Retailer 2
-
€391 EUR
View
Price last confirmed 28 days ago
Retailer 3
-
€438 EUR
View
Price last confirmed 37 days ago
Retailer 4
-
€479 EUR
View
Price last confirmed 41 days ago
Retailer 5
-
€484 EUR
View
Price last confirmed 33 days ago
Retailer 6
-
€484 EUR
View
Price last confirmed 24 days ago
A
Retailer 7
-
€537 EUR
View
B+
Retailer 8
-
€566 EUR
View
B+
Retailer 9
-
€605 EUR
View
B+
Retailer 10
-
€613 EUR
View
B+
Retailer 11
-
€691 EUR
View
B+
Retailer 12
-
€916 EUR
View
B+
Retailer 13
-
€992 EUR
View
B+
Retailer 14
-
€1,157 EUR
View
B
Retailer 15
-
€1,388 EUR
View
B
Retailer 16
-
€1,526 EUR
View
Most Expensive
NZ Jewellers
59d82e18-1654-4883-b84e-e8722c4a5b41 · Oct 5
€1,555 EUR
$1,752 USD
View
Price last confirmed 31 days ago
16 more retailers have this diamond
Prices start from €313 EURSave up to €1,212 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
1.09ct Heart
€313 EUR