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Heart|Lab Grown|IGI

3.71ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG804660377

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG804660377

Diamond specifications and retailer prices

From £2,114 GBP
$2,833 USD
As of October 30, 2026
Save £12,476 GBP (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £14,591 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 3.71ct lab-grown heart diamond

This 3.71ct 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 LG804660377 or 804660377. Listed at 12 retailers as of October 29, 2026, with prices from £2,114 to £14,591, a £12,476 spread on the same certified stone. Do Amore Diamonds lists it at £14,591. 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

3.71
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804660377
Dimensions9.53 × 10.62 × 6.35 mm
L/W Ratio1.11
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
9.53 mm10.62 mm3.71 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804660377
Side View
Table 61.0%Crown 34.2°Girdle: MED-THKPavilion 40.6°Culet: NoneDepth 59.8%

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: £14,591 GBP|Low: £2,114 GBP|High: £16,330 GBP|Avg: £6,566 GBP|-10.6%
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
Retailer 15
October 30, 2026
Retailer 8£2,114 GBP
Retailer 15£2,308 GBP
Retailer 11£2,409 GBP
Retailer 13£2,579 GBP
Retailer 3£2,678 GBP
Retailer 4£2,790 GBP
Retailer 14£3,393 GBP
Retailer 12£3,535 GBP
Retailer 10£3,826 GBP
Retailer 5£5,355 GBP
Retailer 9£6,919 GBP
Retailer 2£9,292 GBP
Retailer 7£11,475 GBP
Retailer 6£13,909 GBP
Do Amore Diamonds£14,591 GBP

26 data points across 15 retailers

12 retailers£2,114 GBP to £14,591 GBP

A
Cheapest Retailer
-
£2,114 GBP
$2,833 USD
A
Retailer 2
-
£2,308 GBP
$3,092 USD
View
A
Retailer 3
-
£2,409 GBP
$3,228 USD
View
A
Retailer 4
-
£2,579 GBP
$3,455 USD
View
A
Retailer 5
-
£2,678 GBP
$3,588 USD
View
A
Retailer 6
-
£2,790 GBP
$3,738 USD
View
Final sale: no returns
A
Retailer 7
-
£3,393 GBP
$4,546 USD
View
B+
Retailer 8
-
£3,535 GBP
$4,736 USD
View
B+
Retailer 9
-
£3,826 GBP
$5,126 USD
View
B
Retailer 10
-
£6,919 GBP
View
B+
Retailer 11
-
£9,292 GBP
$12,450 USD
View
Most Expensive
B
Do Amore Diamonds
27-FDEF14AD4 · Oct 29
£14,591 GBP
$19,550 USD
View
11 more retailers have this diamond
Prices start from £2,114 GBPSave up to £12,476 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
3.71ct Heart
£2,114 GBP