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Round|Lab Grown|IGI

3.09ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG731566848

Shape and cutting style on the report: Round brilliant

Certificate IGI LG731566848

Diamond specifications and retailer prices

From $1,318 AUD
$926 USD
As of October 29, 2026
Save $13,089 AUD (91%) vs most expensive(unlock to see where)
27 retailers carry this diamond
Most expensive: $14,407 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.09ct lab-grown round diamond

This 3.09ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG731566848 or 731566848. Listed at 27 retailers as of October 29, 2026, with prices from $1,318 to $14,407, a $13,089 spread on the same certified stone. Brilliant Earth lists it at $14,407. 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

3.09
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG731566848
Dimensions9.36 × 9.39 × 5.73 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
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 mm9.39 mm3.09 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG731566848
Side View
Table 58.0%Crown 34.8°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.1%

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 29
Current: $14,407 AUD|Low: $1,318 AUD|High: $20,870 AUD|Avg: $3,999 AUD|-31.0%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
October 30, 2026
Retailer 18$1,318 AUD
Retailer 17$1,434 AUD
Retailer 5$1,529 AUD
Retailer 14$1,661 AUD
Retailer 4$1,829 AUD
Retailer 7$2,292 AUD
Retailer 15$2,292 AUD
Retailer 2$2,347 AUD
Retailer 13$2,441 AUD
Retailer 9$3,154 AUD
Retailer 6$3,401 AUD
Retailer 16$3,450 AUD
Retailer 11$3,550 AUD
Retailer 3$4,298 AUD
Retailer 10$4,783 AUD
Retailer 12$5,212 AUD
Retailer 8$7,339 AUD
Brilliant Earth$14,407 AUD

32 data points across 18 retailers

27 retailers$1,318 AUD to $14,407 AUD

A
Cheapest Retailer
-
$1,318 AUD
$926 USD
A
Retailer 2
-
$1,434 AUD
$1,007 USD
View
A
Retailer 3
-
$1,529 AUD
$1,074 USD
View
A
Retailer 4
-
$1,661 AUD
$1,167 USD
View
Final sale: no returns
Retailer 5
-
$1,829 AUD
£1,011 GBP
View
Price last confirmed 13 days ago
A
Retailer 6
-
$1,859 AUD
HK$10,200 HKD
View
A
Retailer 7
-
$1,918 AUD
$1,347 USD
View
A
Retailer 8
-
$2,292 AUD
$1,610 USD
View
A
Retailer 9
-
$2,292 AUD
$1,610 USD
View
A
Retailer 10
-
$2,347 AUD
£1,298 GBP
View
A
Retailer 11
-
$2,441 AUD
€1,633 EUR
View
A
Retailer 12
-
$3,154 AUD
View
A
Retailer 13
-
$3,401 AUD
$2,389 USD
View
A
Retailer 14
-
$3,434 AUD
$2,412 USD
View
Retailer 15
-
$3,450 AUD
View
Price last confirmed 9 days ago
A
Retailer 16
-
$3,550 AUD
ZAR 40,284 ZAR
View
A
Retailer 17
-
$3,910 AUD
$2,746 USD
View
B+
Retailer 18
-
$4,298 AUD
$3,019 USD
View
B+
Retailer 19
-
$4,783 AUD
$3,360 USD
View
B+
Retailer 20
-
$4,996 AUD
$3,510 USD
View
B+
Retailer 21
-
$5,212 AUD
£2,883 GBP
View
B+
Retailer 22
-
$5,316 AUD
$3,734 USD
View
B+
Retailer 23
-
$5,374 AUD
SGD 5,101 SGD
View
B+
Retailer 24
-
$5,774 AUD
$4,056 USD
View
Retailer 25
-
$7,339 AUD
View
Price last confirmed 25 days ago
B
Retailer 26
-
$13,806 AUD
$9,698 USD
View
Most Expensive
B
Brilliant Earth
15998885A · Oct 29
$14,407 AUD
$10,120 USD
View
26 more retailers have this diamond
Prices start from $1,318 AUDSave up to $13,089 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 Round
$1,318 AUD