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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 $3,962 AUD
$2,783 USD
As of October 30, 2026
Save $23,385 AUD (86%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $27,347 AUD at Do Amore Diamonds · As of October 31, 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 30, 2026, with prices from $3,962 to $27,347, a $23,385 spread on the same certified stone. Do Amore Diamonds lists it at $27,347. 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: $27,347 AUD|Low: $3,962 AUD|High: $30,593 AUD|Avg: $11,776 AUD|-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$3,962 AUD
Retailer 11$4,323 AUD
Retailer 9$4,840 AUD
Retailer 12$4,937 AUD
Retailer 10$6,358 AUD
Retailer 8$6,624 AUD
Retailer 7$7,171 AUD
Retailer 3$9,973 AUD
Retailer 6$12,967 AUD
Retailer 2$17,396 AUD
Retailer 4$23,065 AUD
Do Amore Diamonds$27,347 AUD

22 data points across 12 retailers

10 retailers$3,962 AUD to $27,347 AUD

A
Cheapest Retailer
-
$3,962 AUD
$2,783 USD
A
Retailer 2
-
$4,323 AUD
$3,037 USD
View
A
Retailer 3
-
$4,840 AUD
$3,400 USD
View
A
Retailer 4
-
$4,937 AUD
$3,468 USD
View
A
Retailer 5
-
$6,358 AUD
$4,466 USD
View
B+
Retailer 6
-
$6,624 AUD
$4,653 USD
View
B+
Retailer 7
-
$7,171 AUD
$5,037 USD
View
B
Retailer 8
-
$12,967 AUD
£7,172 GBP
View
B+
Retailer 9
-
$17,396 AUD
$12,220 USD
View
Most Expensive
B
Do Amore Diamonds
27-E718634AA · Oct 31
$27,347 AUD
$19,210 USD
View
9 more retailers have this diamond
Prices start from $3,962 AUDSave up to $23,385 AUD

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
$3,962 AUD