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Heart|Lab Grown|IGI

4.03ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG786645678

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG786645678

Diamond specifications and retailer prices

From £2,808 GBP
$3,763 USD
As of October 30, 2026
Save £16,514 GBP (85%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £19,322 GBP at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 4.03ct lab-grown heart diamond

This 4.03ct 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 LG786645678 or 786645678. Listed at 10 retailers as of October 30, 2026, with prices from £2,808 to £19,322, a £16,514 spread on the same certified stone. Do Amore Diamonds lists it at £19,322. 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

4.03
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786645678
Dimensions11.19 × 9.88 × 6.31 mm
L/W Ratio1.13
Girdle conditionFaceted
Culet sizePointed
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
11.19 mm9.88 mm4.03 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786645678
Side View
Table 62.0%Crown 35.9°Girdle: STK-THKPavilion 38.5°Culet: NoneDepth 56.4%

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: £19,322 GBP|Low: £2,808 GBP|High: £22,591 GBP|Avg: £8,898 GBP|-13.6%
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
October 31, 2026
Retailer 11£2,808 GBP
Retailer 8£2,943 GBP
Retailer 13£3,838 GBP
Retailer 2£4,172 GBP
Retailer 10£4,321 GBP
Retailer 9£4,494 GBP
Retailer 12£5,048 GBP
Retailer 7£7,485 GBP
Retailer 3£8,280 GBP
Retailer 6£9,240 GBP
Retailer 4£9,645 GBP
Retailer 5£18,135 GBP
Do Amore Diamonds£19,322 GBP

28 data points across 13 retailers

10 retailers£2,808 GBP to £19,322 GBP

A
Cheapest Retailer
-
£2,808 GBP
$3,763 USD
A
Retailer 2
-
£2,943 GBP
$3,943 USD
View
A
Retailer 3
-
£3,838 GBP
$5,142 USD
View
Final sale: no returns
A
Retailer 4
-
£4,172 GBP
$5,590 USD
View
A
Retailer 5
-
£4,321 GBP
$5,789 USD
View
A
Retailer 6
-
£4,494 GBP
$6,021 USD
View
A
Retailer 7
-
£5,048 GBP
$6,764 USD
View
B+
Retailer 8
-
£7,485 GBP
View
B+
Retailer 9
-
£9,240 GBP
$12,380 USD
View
Most Expensive
B
Do Amore Diamonds
27-95D350581 · Oct 30
£19,322 GBP
$25,890 USD
View
9 more retailers have this diamond
Prices start from £2,808 GBPSave up to £16,514 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
4.03ct Heart
£2,808 GBP