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Heart|Lab Grown|IGI

3.73ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG846663743

Certificate IGI LG846663743

Diamond specifications and retailer prices

From $6,399 AUD
$4,495 USD
As of October 31, 2026
Save $21,205 AUD (77%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $27,604 AUD at With Clarity · As of October 31, 2026
View at With Clarity

About this 3.73ct lab-grown heart diamond

This 3.73ct 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 LG846663743 or 846663743. Listed at 9 retailers as of October 31, 2026, with prices from $6,399 to $27,604, a $21,205 spread on the same certified stone. With Clarity lists it at $27,604. 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

3.73
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG846663743
Dimensions9.97 × 10.35 × 6.34 mm
L/W Ratio1.04
Top View
9.97 mm10.35 mm3.73 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846663743
Side View
Table 56.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 61.3%

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 31
Current: $8,358 AUD|Low: $6,399 AUD|High: $27,604 AUD|Avg: $13,086 AUD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
With Clarity
October 31, 2026
Retailer 3$6,399 AUD
Retailer 6$7,336 AUD
Retailer 2$7,376 AUD
Retailer 5$7,723 AUD
Retailer 1$8,358 AUD
Retailer 7$11,910 AUD
Retailer 4$13,003 AUD
With Clarity$27,604 AUD

6 data points across 8 retailers

9 retailers$6,399 AUD to $27,604 AUD

A
Cheapest Retailer
-
$6,399 AUD
$4,495 USD
B+
Retailer 2
-
$7,336 AUD
$5,153 USD
View
B+
Retailer 3
-
$7,376 AUD
£4,080 GBP
View
B+
Retailer 4
-
$7,723 AUD
$5,425 USD
View
B+
Retailer 5
-
$8,358 AUD
$5,871 USD
View
B+
Retailer 6
-
$11,910 AUD
€7,968 EUR
View
B+
Retailer 7
-
$13,003 AUD
$9,134 USD
View
B
Retailer 8
-
$25,454 AUD
$17,880 USD
View
Most Expensive
B
With Clarity
846663743 · Oct 31
$27,604 AUD
$19,390 USD
View
8 more retailers have this diamond
Prices start from $6,399 AUDSave up to $21,205 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
3.73ct Heart
$6,399 AUD