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Heart|Lab Grown|IGI

3.64ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG821638865

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG821638865

Diamond specifications and retailer prices

From £2,077 GBP
$2,783 USD
As of October 30, 2026
Save £12,260 GBP (86%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £14,337 GBP at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 3.64ct lab-grown heart diamond

This 3.64ct 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 LG821638865 or 821638865. Listed at 10 retailers as of October 29, 2026, with prices from £2,077 to £14,337, a £12,260 spread on the same certified stone. Do Amore Diamonds lists it at £14,337. 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

3.64
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.5°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821638865
Dimensions8.91 × 10.47 × 6.47 mm
L/W Ratio1.18
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
8.91 mm10.47 mm3.64 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821638865
Side View
Table 59.0%Crown 36.5°Girdle: STK-THKPavilion 39.5°Culet: NoneDepth 61.8%

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: £14,337 GBP|Low: £2,077 GBP|High: £16,039 GBP|Avg: £6,902 GBP|-10.6%
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
October 30, 2026
Retailer 5£2,077 GBP
Retailer 11£2,267 GBP
Retailer 9£2,538 GBP
Retailer 12£2,588 GBP
Retailer 10£3,333 GBP
Retailer 8£3,473 GBP
Retailer 7£3,759 GBP
Retailer 3£5,229 GBP
Retailer 6£6,798 GBP
Retailer 2£9,120 GBP
Retailer 4£12,092 GBP
Do Amore Diamonds£14,337 GBP

20 data points across 12 retailers

10 retailers£2,077 GBP to £14,337 GBP

A
Cheapest Retailer
-
£2,077 GBP
$2,783 USD
A
Retailer 2
-
£2,267 GBP
$3,037 USD
View
A
Retailer 3
-
£2,538 GBP
$3,400 USD
View
A
Retailer 4
-
£2,588 GBP
$3,468 USD
View
A
Retailer 5
-
£3,333 GBP
$4,466 USD
View
B+
Retailer 6
-
£3,473 GBP
$4,653 USD
View
B+
Retailer 7
-
£3,759 GBP
$5,037 USD
View
B
Retailer 8
-
£6,798 GBP
View
B+
Retailer 9
-
£9,120 GBP
$12,220 USD
View
Most Expensive
B
Do Amore Diamonds
27-E718634AA · Oct 29
£14,337 GBP
$19,210 USD
View
9 more retailers have this diamond
Prices start from £2,077 GBPSave up to £12,260 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
3.64ct Heart
£2,077 GBP