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Heart|Lab Grown|IGI

4.02ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG804660278

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG804660278

Diamond specifications and retailer prices

From £2,914 GBP
$3,904 USD
As of October 30, 2026
Save £17,215 GBP (86%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £20,129 GBP at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 4.02ct lab-grown heart diamond

This 4.02ct 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 LG804660278 or 804660278. Listed at 13 retailers as of October 30, 2026, with prices from £2,914 to £20,129, a £17,215 spread on the same certified stone. Do Amore Diamonds lists it at £20,129. 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

4.02
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804660278
Dimensions10.88 × 9.82 × 6.50 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
10.88 mm9.82 mm4.02 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804660278
Side View
Table 58.0%Crown 35.7°Girdle: STK-THKPavilion 39.3°Culet: NoneDepth 59.7%

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: £20,129 GBP|Low: £2,914 GBP|High: £22,539 GBP|Avg: £7,025 GBP|-10.7%
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£2,914 GBP
Retailer 3£3,067 GBP
Retailer 11£3,161 GBP
Retailer 4£3,264 GBP
Retailer 14£3,437 GBP
Retailer 5£3,854 GBP
Retailer 12£4,502 GBP
Retailer 13£4,682 GBP
Retailer 10£5,257 GBP
Retailer 8£6,468 GBP
Retailer 6£7,358 GBP
Retailer 9£7,799 GBP
Retailer 2£9,926 GBP
Do Amore Diamonds£20,129 GBP

30 data points across 14 retailers

13 retailers£2,914 GBP to £20,129 GBP

A
Cheapest Retailer
-
£2,914 GBP
$3,904 USD
A
Retailer 2
-
£3,067 GBP
$4,109 USD
View
A
Retailer 3
-
£3,161 GBP
$4,236 USD
View
A
Retailer 4
-
£3,264 GBP
$4,373 USD
View
A
Retailer 5
-
£3,437 GBP
$4,605 USD
View
A
Retailer 6
-
£3,854 GBP
$5,164 USD
View
Final sale: no returns
A
Retailer 7
-
£4,502 GBP
$6,032 USD
View
A
Retailer 8
-
£4,682 GBP
$6,273 USD
View
A
Retailer 9
-
£5,257 GBP
$7,044 USD
View
A
Retailer 10
-
£6,468 GBP
€8,254 EUR
View
B+
Retailer 11
-
£7,799 GBP
View
B+
Retailer 12
-
£9,926 GBP
$13,300 USD
View
Most Expensive
B
Do Amore Diamonds
27-24C75829B · Oct 31
£20,129 GBP
$26,970 USD
View
12 more retailers have this diamond
Prices start from £2,914 GBPSave up to £17,215 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
4.02ct Heart
£2,914 GBP