CaratHunter
Plans
Heart|Lab Grown|IGI

4.29ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG800677281

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG800677281

Diamond specifications and retailer prices

From £3,100 GBP
$4,154 USD
As of October 30, 2026
Save £18,319 GBP (86%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £21,420 GBP at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 4.29ct lab-grown heart diamond

This 4.29ct 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 LG800677281 or 800677281. Listed at 12 retailers as of October 30, 2026, with prices from £3,100 to £21,420, a £18,319 spread on the same certified stone. Do Amore Diamonds lists it at £21,420. 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

4.29
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG800677281
Dimensions11.11 × 9.70 × 6.69 mm
L/W Ratio1.15
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
11.11 mm9.70 mm4.29 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG800677281
Side View
Table 59.0%Crown 36.7°Girdle: THK-VTKPavilion 40.3°Culet: NoneDepth 60.2%

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: £21,420 GBP|Low: £3,100 GBP|High: £23,995 GBP|Avg: £9,204 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
Retailer 15
October 30, 2026
Retailer 8£3,100 GBP
Retailer 15£3,262 GBP
Retailer 11£3,358 GBP
Retailer 14£3,650 GBP
Retailer 3£3,664 GBP
Retailer 4£4,102 GBP
Retailer 12£4,699 GBP
Retailer 13£4,981 GBP
Retailer 10£5,591 GBP
Retailer 5£7,829 GBP
Retailer 9£8,297 GBP
Retailer 2£11,874 GBP
Retailer 6£11,977 GBP
Retailer 7£18,177 GBP
Do Amore Diamonds£21,420 GBP

24 data points across 15 retailers

12 retailers£3,100 GBP to £21,420 GBP

A
Cheapest Retailer
-
£3,100 GBP
$4,154 USD
A
Retailer 2
-
£3,262 GBP
$4,371 USD
View
A
Retailer 3
-
£3,358 GBP
$4,499 USD
View
A
Retailer 4
-
£3,650 GBP
$4,890 USD
View
A
Retailer 5
-
£3,664 GBP
$4,909 USD
View
A
Retailer 6
-
£4,102 GBP
$5,496 USD
View
Final sale: no returns
A
Retailer 7
-
£4,699 GBP
$6,296 USD
View
A
Retailer 8
-
£4,981 GBP
$6,674 USD
View
A
Retailer 9
-
£5,591 GBP
$7,491 USD
View
B+
Retailer 10
-
£8,297 GBP
View
B+
Retailer 11
-
£11,874 GBP
$15,910 USD
View
Most Expensive
B
Do Amore Diamonds
27-C03A24A2E · Oct 30
£21,420 GBP
$28,700 USD
View
11 more retailers have this diamond
Prices start from £3,100 GBPSave up to £18,319 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
4.29ct Heart
£3,100 GBP