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Heart|Lab Grown|IGI

3.55ct F FL Heart Lab Grown Diamond

ID • F/FL • IGI LG840634502

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG840634502

Diamond specifications and retailer prices

From $4,092 AUD
$2,868 USD
As of November 2, 2026
Save $16,645 AUD (80%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $20,737 AUD at With Clarity · As of November 2, 2026
View at With Clarity

About this 3.55ct lab-grown heart diamond

This 3.55ct lab-grown heart sits in the three to five carat band, graded F colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840634502 or 840634502. Listed at 19 retailers as of November 2, 2026, with prices from $4,092 to $20,737, a $16,645 spread on the same certified stone. With Clarity lists it at $20,737. 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

3.55
Carat
F
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840634502
Dimensions9.36 × 10.20 × 6.22 mm
L/W Ratio1.09
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
9.36 mm10.20 mm3.55 ctF / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840634502
Side View
Table 60.0%Crown 36.7°Girdle: STK-THKPavilion 40.2°Culet: NoneDepth 61.0%

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: Nov 2
Current: $8,954 AUD|Low: $4,092 AUD|High: $20,737 AUD|Avg: $8,773 AUD|+0.2%
Retailer 1
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
Retailer 16
Retailer 17
Retailer 18
With Clarity
November 2, 2026
Retailer 10$4,092 AUD
Retailer 2$4,452 AUD
Retailer 7$4,746 AUD
Retailer 17$4,764 AUD
Retailer 3$4,973 AUD
Retailer 11$5,224 AUD
Retailer 9$5,425 AUD
Retailer 4$5,451 AUD
Retailer 14$6,079 AUD
Retailer 12$6,413 AUD
Retailer 6$6,524 AUD
Retailer 18$7,381 AUD
Retailer 1$8,954 AUD
Retailer 16$11,022 AUD
Retailer 13$12,031 AUD
Retailer 15$12,340 AUD
Retailer 8$16,538 AUD
Retailer 5$18,930 AUD
With Clarity$20,737 AUD

15 data points across 19 retailers

19 retailers$4,092 AUD to $20,737 AUD

A
Cheapest Retailer
-
$4,092 AUD
$2,868 USD
A
Retailer 2
-
$4,452 AUD
$3,120 USD
View
A
Retailer 3
-
$4,746 AUD
$3,326 USD
View
A
Retailer 4
-
$4,764 AUD
$3,339 USD
View
A
Retailer 5
-
$4,973 AUD
$3,485 USD
View
A
Retailer 6
-
$5,224 AUD
£2,883 GBP
View
A
Retailer 7
-
$5,425 AUD
$3,802 USD
View
Final sale: no returns
A
Retailer 8
-
$5,451 AUD
$3,820 USD
View
B+
Retailer 9
-
$6,079 AUD
$4,260 USD
View
B+
Retailer 10
-
$6,413 AUD
£3,539 GBP
View
B+
Retailer 11
-
$6,524 AUD
$4,572 USD
View
B+
Retailer 12
-
$7,381 AUD
$5,173 USD
View
B+
Retailer 13
-
$8,954 AUD
€5,976 EUR
View
B+
Retailer 14
-
$11,022 AUD
ZAR 124,793 ZAR
View
B+
Retailer 15
-
$12,031 AUD
£6,639 GBP
View
B+
Retailer 16
-
$12,340 AUD
$8,648 USD
View
B
Retailer 17
-
$16,538 AUD
$11,590 USD
View
B
Retailer 18
-
$18,930 AUD
SGD 17,928 SGD
View
Most Expensive
B
With Clarity
840634502 · Nov 2
$20,737 AUD
$14,533 USD
View
18 more retailers have this diamond
Prices start from $4,092 AUDSave up to $16,645 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
3.55ct Heart
$4,092 AUD