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Heart|Lab Grown|IGI

1.00ct D FL Heart Lab Grown Diamond

GD • D/FL • IGI LG818671731

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG818671731

Diamond specifications and retailer prices

From €337 EUR
$377 USD
As of October 30, 2026
Save €1,169 EUR (78%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €1,506 EUR at MOH London · As of October 29, 2026
View at MOH London

About this 1ct lab-grown heart diamond

This 1ct lab-grown heart sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a standard cut grade and certified by IGI LG818671731 or 818671731. Listed at 19 retailers as of October 29, 2026, with prices from €337 to €1,506, a €1,169 spread on the same certified stone. MOH London lists it at €1,506. 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

1.00
Carat
D
Color
FL
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle38.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818671731
Dimensions6.26 × 6.82 × 3.97 mm
L/W Ratio1.09
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
6.26 mm6.82 mm1.00 ctD / FL
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818671731
Side View
Table 56.0%Crown 35.9°Girdle: STK-THKPavilion 38.4°Culet: NoneDepth 58.2%

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: €1,506 EUR|Low: €290 EUR|High: €1,787 EUR|Avg: €881 EUR|-14.7%
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
Retailer 14
November 1, 2026
Retailer 3€337 EUR
Retailer 6€452 EUR
Retailer 8€510 EUR
Retailer 11€526 EUR
Retailer 13€526 EUR
Retailer 7€604 EUR
Retailer 10€642 EUR
Retailer 2€670 EUR
Retailer 5€714 EUR
Retailer 14€848 EUR
Retailer 9€918 EUR
Retailer 4€1,241 EUR
Retailer 12€1,459 EUR
MOH London€1,506 EUR

37 data points across 14 retailers

19 retailers€337 EUR to €1,506 EUR

A
Cheapest Retailer
-
€337 EUR
$377 USD
Final sale: no returns
Retailer 2
-
€363 EUR
$406 USD
View
Price last confirmed 23 days ago
Retailer 3
-
€408 EUR
$456 USD
View
Price last confirmed 33 days ago
Retailer 4
-
€446 EUR
$498 USD
View
Price last confirmed 36 days ago
Retailer 5
-
€450 EUR
$503 USD
View
Price last confirmed 19 days ago
Retailer 6
-
€450 EUR
$503 USD
View
Price last confirmed 28 days ago
B+
Retailer 7
-
€510 EUR
$570 USD
View
B+
Retailer 8
-
€526 EUR
$588 USD
View
B+
Retailer 9
-
€526 EUR
$588 USD
View
B+
Retailer 10
-
€604 EUR
View
B+
Retailer 11
-
€642 EUR
ZAR 11,596 ZAR
View
B+
Retailer 12
-
€670 EUR
£590 GBP
View
Retailer 13
-
€714 EUR
HK$6,231 HKD
View
Price last confirmed 11 days ago
B
Retailer 14
-
€848 EUR
$948 USD
View
B
Retailer 15
-
€918 EUR
$1,026 USD
View
B
Retailer 16
-
€1,241 EUR
$1,386 USD
View
Retailer 17
-
€1,447 EUR
$1,617 USD
View
Price last confirmed 27 days ago
B
Retailer 18
-
€1,459 EUR
$1,630 USD
View
Most Expensive
B
MOH London
LG818671731 · Oct 29
€1,506 EUR
£1,325 GBP
View
18 more retailers have this diamond
Prices start from €337 EURSave up to €1,169 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
1.00ct Heart
€337 EUR