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Heart|Lab Grown|IGI

4.05ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG804664728

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG804664728

Diamond specifications and retailer prices

From €10,419 EUR
$11,640 USD
As of November 1, 2026
Save €24,958 EUR (71%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €35,377 EUR at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 4.05ct lab-grown heart diamond

This 4.05ct lab-grown heart sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG804664728 or 804664728. Listed at 8 retailers as of October 31, 2026, with prices from €10,419 to €35,377, a €24,958 spread on the same certified stone. Taylor and Hart lists it at €35,377. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.05
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804664728
Dimensions11.10 × 9.46 × 6.59 mm
L/W Ratio1.17
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
11.10 mm9.46 mm4.05 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804664728
Side View
Table 56.0%Crown 35.6°Girdle: MED-THKPavilion 41°Culet: NoneDepth 59.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: €18,618 EUR|Low: €10,078 EUR|High: €35,377 EUR|Avg: €19,522 EUR|+0.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Taylor and Hart
October 29, 2026
Retailer 4€10,419 EUR
Retailer 8€11,056 EUR
Retailer 7€11,757 EUR
Retailer 2€14,543 EUR
Retailer 1€18,618 EUR
Retailer 3€19,209 EUR
Retailer 9€20,055 EUR
Retailer 6€20,537 EUR
Retailer 5€33,496 EUR
Taylor and Hart€35,377 EUR

14 data points across 10 retailers

8 retailers€10,419 EUR to €35,377 EUR

B+
Cheapest Retailer
-
€10,419 EUR
$11,640 USD
B+
Retailer 2
-
€11,056 EUR
$12,352 USD
View
B+
Retailer 3
-
€11,757 EUR
$13,135 USD
View
Retailer 4
-
€14,543 EUR
£12,793 GBP
View
Price last confirmed 12 days ago
B+
Retailer 5
-
€18,618 EUR
£16,378 GBP
View
B
Retailer 6
-
€19,209 EUR
$21,460 USD
View
B
Retailer 7
-
€33,496 EUR
$37,422 USD
View
Most Expensive
B
Taylor and Hart
RQLT5QX · Oct 31
€35,377 EUR
$39,523 USD
View
7 more retailers have this diamond
Prices start from €10,419 EURSave up to €24,958 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.

B+
4.05ct Heart
€10,419 EUR