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Heart|Lab Grown|IGI

3.09ct D SI2 Heart Lab Grown Diamond

ID • D/SI2 • IGI LG685540444

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG685540444

Diamond specifications and retailer prices

From $542 AUD
$381 USD
As of October 30, 2026
Save $4,084 AUD (88%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,627 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.09ct lab-grown heart diamond

This 3.09ct lab-grown heart sits in the three to five carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG685540444 or 685540444. Listed at 14 retailers as of October 30, 2026, with prices from $542 to $4,627, a $4,084 spread on the same certified stone. Brilliant Earth lists it at $4,627. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.09
Carat
D
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG685540444
Dimensions9.89 × 8.87 × 5.99 mm
L/W Ratio1.11
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.89 mm8.87 mm3.09 ctD / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG685540444
Side View
Table 59.0%Crown 37.6°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 60.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $4,627 AUD|Low: $542 AUD|High: $5,438 AUD|Avg: $1,612 AUD|-14.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 6$542 AUD
Retailer 4$639 AUD
Retailer 10$672 AUD
Retailer 5$708 AUD
Retailer 7$897 AUD
Retailer 8$1,216 AUD
Retailer 2$1,217 AUD
Retailer 13$1,692 AUD
Retailer 3$1,700 AUD
Retailer 9$1,953 AUD
Retailer 11$2,160 AUD
Retailer 12$2,770 AUD
Brilliant Earth$4,627 AUD

43 data points across 13 retailers

14 retailers$542 AUD to $4,627 AUD

A
Cheapest Retailer
-
$542 AUD
$381 USD
A
Retailer 2
-
$639 AUD
$449 USD
View
A
Retailer 3
-
$672 AUD
$472 USD
View
A
Retailer 4
-
$708 AUD
$497 USD
View
B+
Retailer 5
-
$897 AUD
$630 USD
View
A
Retailer 6
-
$1,216 AUD
£672 GBP
View
A
Retailer 7
-
$1,217 AUD
$855 USD
View
Retailer 8
-
$1,557 AUD
$1,094 USD
View
Price last confirmed 21 days ago
B+
Retailer 9
-
$1,692 AUD
View
B+
Retailer 10
-
$1,700 AUD
$1,194 USD
View
B+
Retailer 11
-
$1,953 AUD
$1,372 USD
View
B+
Retailer 12
-
$2,160 AUD
$1,517 USD
View
B
Retailer 13
-
$2,770 AUD
£1,532 GBP
View
Most Expensive
B
Brilliant Earth
13281496A · Oct 30
$4,627 AUD
$3,250 USD
View
13 more retailers have this diamond
Prices start from $542 AUDSave up to $4,084 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
3.09ct Heart
$542 AUD