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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 €346 EUR
$386 USD
As of October 30, 2026
Save €1,164 EUR (77%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €1,510 EUR at MOH London · As of October 29, 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 October 29, 2026, with prices from €346 to €1,510, a €1,164 spread on the same certified stone. MOH London lists it at €1,510. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €1,510 EUR|Low: €298 EUR|High: €1,727 EUR|Avg: €917 EUR|-11.5%
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
October 31, 2026
Retailer 3€346 EUR
Retailer 5€465 EUR
Retailer 7€519 EUR
Retailer 10€542 EUR
Retailer 12€554 EUR
Retailer 2€618 EUR
Retailer 9€660 EUR
Retailer 6€690 EUR
Retailer 13€874 EUR
Retailer 8€945 EUR
Retailer 4€1,273 EUR
Retailer 11€1,486 EUR
MOH London€1,510 EUR

37 data points across 13 retailers

18 retailers€346 EUR to €1,510 EUR

A
Cheapest Retailer
-
€346 EUR
$386 USD
Final sale: no returns
Retailer 2
-
€373 EUR
$417 USD
View
Price last confirmed 23 days ago
Retailer 3
-
€420 EUR
$469 USD
View
Price last confirmed 33 days ago
Retailer 4
-
€458 EUR
$512 USD
View
Price last confirmed 36 days ago
Retailer 5
-
€463 EUR
$517 USD
View
Price last confirmed 28 days ago
Retailer 6
-
€463 EUR
$517 USD
View
Price last confirmed 19 days ago
A
Retailer 7
-
€519 EUR
$580 USD
View
B+
Retailer 8
-
€542 EUR
$605 USD
View
B+
Retailer 9
-
€554 EUR
$619 USD
View
B+
Retailer 10
-
€618 EUR
View
B+
Retailer 11
-
€660 EUR
ZAR 11,915 ZAR
View
B+
Retailer 12
-
€690 EUR
£607 GBP
View
B+
Retailer 13
-
€874 EUR
$976 USD
View
B+
Retailer 14
-
€945 EUR
$1,056 USD
View
B
Retailer 15
-
€1,273 EUR
$1,422 USD
View
B
Retailer 16
-
€1,486 EUR
$1,660 USD
View
Retailer 17
-
€1,488 EUR
$1,662 USD
View
Price last confirmed 27 days ago
Most Expensive
B
MOH London
LG818671734 · Oct 29
€1,510 EUR
£1,328 GBP
View
17 more retailers have this diamond
Prices start from €346 EURSave up to €1,164 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
€346 EUR