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Heart|Lab Grown|IGI

4.33ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG811635663

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG811635663

Diamond specifications and retailer prices

From £3,128 GBP
$4,191 USD
As of October 30, 2026
Save £18,478 GBP (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £21,606 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 4.33ct lab-grown heart diamond

This 4.33ct 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 LG811635663 or 811635663. Listed at 12 retailers as of October 29, 2026, with prices from £3,128 to £21,606, a £18,478 spread on the same certified stone. Do Amore Diamonds lists it at £21,606. 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

4.33
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811635663
Dimensions10.95 × 10.30 × 6.73 mm
L/W Ratio1.06
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
10.95 mm10.30 mm4.33 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811635663
Side View
Table 57.0%Crown 34.7°Girdle: THK-VTKPavilion 40.8°Culet: NoneDepth 61.5%

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: £21,606 GBP|Low: £3,128 GBP|High: £24,203 GBP|Avg: £8,468 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
October 30, 2026
Retailer 6£3,128 GBP
Retailer 3£3,291 GBP
Retailer 10£3,386 GBP
Retailer 13£3,679 GBP
Retailer 4£3,725 GBP
Retailer 11£4,741 GBP
Retailer 12£5,025 GBP
Retailer 9£5,640 GBP
Retailer 7£6,968 GBP
Retailer 5£7,902 GBP
Retailer 8£8,371 GBP
Retailer 2£11,986 GBP
Do Amore Diamonds£21,606 GBP

27 data points across 13 retailers

12 retailers£3,128 GBP to £21,606 GBP

A
Cheapest Retailer
-
£3,128 GBP
$4,191 USD
A
Retailer 2
-
£3,291 GBP
$4,410 USD
View
A
Retailer 3
-
£3,386 GBP
$4,537 USD
View
A
Retailer 4
-
£3,679 GBP
$4,930 USD
View
A
Retailer 5
-
£3,725 GBP
$4,991 USD
View
A
Retailer 6
-
£4,741 GBP
$6,352 USD
View
A
Retailer 7
-
£5,025 GBP
$6,733 USD
View
A
Retailer 8
-
£5,640 GBP
$7,557 USD
View
A
Retailer 9
-
£6,968 GBP
€8,892 EUR
View
B+
Retailer 10
-
£8,371 GBP
View
B+
Retailer 11
-
£11,986 GBP
$16,060 USD
View
Most Expensive
B
Do Amore Diamonds
27-673761281 · Oct 29
£21,606 GBP
$28,950 USD
View
11 more retailers have this diamond
Prices start from £3,128 GBPSave up to £18,478 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
4.33ct Heart
£3,128 GBP