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Heart|Lab Grown|IGI

3.48ct D FL Heart Lab Grown Diamond

EX • D/FL • IGI LG784642609

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG784642609

Diamond specifications and retailer prices

From £1,764 GBP
$2,364 USD
As of October 30, 2026
Save £10,393 GBP (85%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £12,158 GBP at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 3.48ct lab-grown heart diamond

This 3.48ct 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 LG784642609 or 784642609. Listed at 13 retailers as of October 30, 2026, with prices from £1,764 to £12,158, a £10,393 spread on the same certified stone. Do Amore Diamonds lists it at £12,158. 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

3.48
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784642609
Dimensions9.74 × 10.22 × 6.19 mm
L/W Ratio1.05
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.74 mm10.22 mm3.48 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784642609
Side View
Table 59.0%Crown 37.2°Girdle: STK-THKPavilion 39.6°Culet: NoneDepth 60.6%

Caratlytics Score

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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: £12,158 GBP|Low: £1,764 GBP|High: £14,762 GBP|Avg: £4,726 GBP|-17.6%
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
October 30, 2026
Retailer 2£1,764 GBP
Retailer 14£1,923 GBP
Retailer 10£2,065 GBP
Retailer 12£2,172 GBP
Retailer 3£2,392 GBP
Retailer 5£2,520 GBP
Retailer 13£3,110 GBP
Retailer 11£3,141 GBP
Retailer 9£3,197 GBP
Retailer 7£3,829 GBP
Retailer 6£4,845 GBP
Retailer 8£6,091 GBP
Retailer 4£11,501 GBP
Do Amore Diamonds£12,158 GBP

30 data points across 14 retailers

13 retailers£1,764 GBP to £12,158 GBP

A
Cheapest Retailer
-
£1,764 GBP
$2,364 USD
A
Retailer 2
-
£1,923 GBP
$2,576 USD
View
A
Retailer 3
-
£2,065 GBP
$2,767 USD
View
A
Retailer 4
-
£2,172 GBP
$2,910 USD
View
A
Retailer 5
-
£2,392 GBP
$3,205 USD
View
A
Retailer 6
-
£2,520 GBP
$3,376 USD
View
Final sale: no returns
A
Retailer 7
-
£3,110 GBP
$4,167 USD
View
A
Retailer 8
-
£3,141 GBP
$4,209 USD
View
A
Retailer 9
-
£3,197 GBP
$4,284 USD
View
B+
Retailer 10
-
£3,829 GBP
€4,886 EUR
View
B+
Retailer 11
-
£6,091 GBP
View
B
Retailer 12
-
£11,501 GBP
$15,410 USD
View
Most Expensive
B
Do Amore Diamonds
27-F879ED1FD · Oct 30
£12,158 GBP
$16,290 USD
View
12 more retailers have this diamond
Prices start from £1,764 GBPSave up to £10,393 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
3.48ct Heart
£1,764 GBP