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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 €361 EUR
$403 USD
As of October 30, 2026
Save €1,931 EUR (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €2,291 EUR at Brilliant Earth · As of October 30, 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 October 30, 2026, with prices from €361 to €2,291, a €1,931 spread on the same certified stone. Brilliant Earth lists it at €2,291. 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
Color
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

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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: €2,291 EUR|Low: €361 EUR|High: €2,426 EUR|Avg: €1,032 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
October 31, 2026
Retailer 4€361 EUR
Retailer 8€413 EUR
Retailer 6€537 EUR
Retailer 13€558 EUR
Retailer 11€564 EUR
Retailer 10€688 EUR
Retailer 2€721 EUR
Retailer 3€913 EUR
Retailer 7€988 EUR
Retailer 5€1,323 EUR
Retailer 12€1,527 EUR
Retailer 9€1,572 EUR
Brilliant Earth€2,291 EUR

27 data points across 13 retailers

18 retailers€361 EUR to €2,291 EUR

A
Cheapest Retailer
-
€361 EUR
$403 USD
Final sale: no returns
Retailer 2
-
€374 EUR
$418 USD
View
Price last confirmed 23 days ago
A
Retailer 3
-
€413 EUR
£364 GBP
View
Retailer 4
-
€418 EUR
$467 USD
View
Price last confirmed 33 days ago
Retailer 5
-
€465 EUR
$519 USD
View
Price last confirmed 28 days ago
Retailer 6
-
€465 EUR
$519 USD
View
Price last confirmed 19 days ago
B+
Retailer 7
-
€537 EUR
$600 USD
View
B+
Retailer 8
-
€558 EUR
$623 USD
View
B+
Retailer 9
-
€564 EUR
$630 USD
View
B+
Retailer 10
-
€688 EUR
ZAR 12,412 ZAR
View
B+
Retailer 11
-
€721 EUR
£635 GBP
View
B+
Retailer 12
-
€913 EUR
$1,020 USD
View
B
Retailer 13
-
€988 EUR
$1,104 USD
View
B
Retailer 14
-
€1,323 EUR
$1,478 USD
View
Retailer 15
-
€1,493 EUR
$1,668 USD
View
Price last confirmed 27 days ago
B
Retailer 16
-
€1,527 EUR
$1,706 USD
View
B
Retailer 17
-
€1,572 EUR
£1,383 GBP
View
Most Expensive
B
Brilliant Earth
21580679A · Oct 30
€2,291 EUR
$2,560 USD
View
17 more retailers have this diamond
Prices start from €361 EURSave up to €1,931 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
€361 EUR