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Heart|Lab Grown|IGI

1.03ct D FL Heart Lab Grown Diamond

VG • D/FL • IGI LG818658618

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG818658618

Diamond specifications and retailer prices

From €358 EUR
As of November 3, 2026
Save €1,914 EUR (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €2,272 EUR at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

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 very-good cut grade and certified by IGI LG818658618 or 818658618. Listed at 18 retailers as of November 3, 2026, with prices from €358 to €2,272, a €1,914 spread on the same certified stone. Brilliant Earth lists it at €2,272. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.03
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.7°
Pavilion angle38.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818658618
Dimensions6.12 × 6.91 × 4.10 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
6.12 mm6.91 mm1.03 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818658618
Side View
Table 56.0%Crown 38.7°Girdle: STK-THKPavilion 38.1°Culet: NoneDepth 59.3%

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: Nov 3
Current: €2,272 EUR|Low: €358 EUR|High: €2,405 EUR|Avg: €1,009 EUR|-5.5%
Brilliant Earth
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 5€358 EUR
Retailer 6€375 EUR
Retailer 10€533 EUR
Retailer 3€553 EUR
Retailer 12€559 EUR
Retailer 2€643 EUR
Retailer 8€684 EUR
Retailer 4€905 EUR
Retailer 11€980 EUR
Retailer 7€1,212 EUR
Retailer 13€1,514 EUR
Retailer 9€1,551 EUR
Brilliant Earth€2,272 EUR

32 data points across 13 retailers

18 retailers€358 EUR to €2,272 EUR

A
Cheapest Retailer
-
€358 EUR
Final sale: no returns
Retailer 2
-
€371 EUR
View
Price last confirmed 28 days ago
A
Retailer 3
-
€375 EUR
View
Retailer 4
-
€414 EUR
View
Price last confirmed 37 days ago
Retailer 5
-
€461 EUR
View
Price last confirmed 33 days ago
Retailer 6
-
€461 EUR
View
Price last confirmed 24 days ago
B+
Retailer 7
-
€533 EUR
View
B+
Retailer 8
-
€553 EUR
View
B+
Retailer 9
-
€559 EUR
View
B+
Retailer 10
-
€643 EUR
View
B+
Retailer 11
-
€684 EUR
View
B+
Retailer 12
-
€905 EUR
View
B
Retailer 13
-
€980 EUR
View
B
Retailer 14
-
€1,212 EUR
View
Retailer 15
-
€1,480 EUR
View
Price last confirmed 31 days ago
B
Retailer 16
-
€1,514 EUR
View
B
Retailer 17
-
€1,551 EUR
View
Most Expensive
B
Brilliant Earth
21580679A · Nov 4
€2,272 EUR
$2,560 USD
View
17 more retailers have this diamond
Prices start from €358 EURSave up to €1,914 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
€358 EUR