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Heart|Lab Grown|IGI

3.94ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG804660314

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG804660314

Diamond specifications and retailer prices

From £2,237 GBP
$2,997 USD
As of October 30, 2026
Save £13,197 GBP (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £15,434 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 3.94ct lab-grown heart diamond

This 3.94ct 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 LG804660314 or 804660314. Listed at 12 retailers as of October 30, 2026, with prices from £2,237 to £15,434, a £13,197 spread on the same certified stone. Do Amore Diamonds lists it at £15,434. 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

3.94
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle39.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804660314
Dimensions9.52 × 10.93 × 6.40 mm
L/W Ratio1.15
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
9.52 mm10.93 mm3.94 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804660314
Side View
Table 64.0%Crown 37.8°Girdle: STK-THKPavilion 39.9°Culet: NoneDepth 58.6%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £15,434 GBP|Low: £2,237 GBP|High: £17,397 GBP|Avg: £6,928 GBP|-11.3%
Do Amore Diamonds
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
October 30, 2026
Retailer 7£2,237 GBP
Retailer 14£2,440 GBP
Retailer 10£2,543 GBP
Retailer 12£2,720 GBP
Retailer 4£2,973 GBP
Retailer 3£2,982 GBP
Retailer 13£3,589 GBP
Retailer 11£3,663 GBP
Retailer 9£4,044 GBP
Retailer 8£7,319 GBP
Retailer 2£9,904 GBP
Retailer 6£12,592 GBP
Retailer 5£15,263 GBP
Do Amore Diamonds£15,434 GBP

26 data points across 14 retailers

12 retailers£2,237 GBP to £15,434 GBP

A
Cheapest Retailer
-
£2,237 GBP
$2,997 USD
A
Retailer 2
-
£2,440 GBP
$3,270 USD
View
A
Retailer 3
-
£2,543 GBP
$3,408 USD
View
A
Retailer 4
-
£2,720 GBP
$3,645 USD
View
A
Retailer 5
-
£2,973 GBP
$3,983 USD
View
Final sale: no returns
A
Retailer 6
-
£2,982 GBP
$3,996 USD
View
A
Retailer 7
-
£3,589 GBP
$4,809 USD
View
A
Retailer 8
-
£3,663 GBP
$4,908 USD
View
B+
Retailer 9
-
£4,044 GBP
$5,419 USD
View
B
Retailer 10
-
£7,319 GBP
View
B
Retailer 11
-
£9,904 GBP
$13,270 USD
View
Most Expensive
B
Do Amore Diamonds
27-45E0A7750 · Oct 31
£15,434 GBP
$20,680 USD
View
11 more retailers have this diamond
Prices start from £2,237 GBPSave up to £13,197 GBP

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
3.94ct Heart
£2,237 GBP