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Round|Lab Grown|IGI

3.09ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG839676250

Shape and cutting style on the report: Round brilliant

Certificate IGI LG839676250

Diamond specifications and retailer prices

From $1,479 AUD
$1,039 USD
As of October 29, 2026
Save $19,405 AUD (93%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $20,884 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 LG839676250 or 839676250. Listed at 14 retailers as of October 29, 2026, with prices from $1,479 to $20,884, a $19,405 spread on the same certified stone. Brilliant Earth lists it at $20,884. 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 angle35.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839676250
Dimensions9.34 × 9.29 × 5.75 mm
L/W Ratio1.01
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
9.34 mm9.29 mm3.09 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839676250
Side View
Table 58.0%Crown 35.2°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.8%

Caratlytics Score

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A+
Exceptional
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: $20,884 AUD|Low: $1,479 AUD|High: $20,884 AUD|Avg: $4,539 AUD
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
October 30, 2026
Retailer 12$1,479 AUD
Retailer 11$1,768 AUD
Retailer 2$1,829 AUD
Retailer 13$2,192 AUD
Retailer 3$2,221 AUD
Retailer 7$2,353 AUD
Retailer 10$2,405 AUD
Retailer 4$3,427 AUD
Retailer 5$3,545 AUD
Retailer 8$3,559 AUD
Retailer 6$4,669 AUD
Retailer 14$5,142 AUD
Retailer 9$5,225 AUD
Brilliant Earth$20,884 AUD

19 data points across 14 retailers

14 retailers$1,479 AUD to $20,884 AUD

A+
Cheapest Retailer
-
$1,479 AUD
$1,039 USD
Final sale: no returns
A
Retailer 2
-
$1,768 AUD
HK$9,700 HKD
View
A
Retailer 3
-
$1,829 AUD
£1,012 GBP
View
A
Retailer 4
-
$2,192 AUD
$1,540 USD
View
A
Retailer 5
-
$2,221 AUD
$1,560 USD
View
A
Retailer 6
-
$2,353 AUD
£1,301 GBP
View
A
Retailer 7
-
$2,405 AUD
€1,609 EUR
View
A
Retailer 8
-
$3,427 AUD
$2,407 USD
View
Retailer 9
-
$3,545 AUD
View
Price last confirmed 8 days ago
A
Retailer 10
-
$3,559 AUD
ZAR 40,385 ZAR
View
B+
Retailer 11
-
$4,669 AUD
$3,280 USD
View
B+
Retailer 12
-
$5,142 AUD
SGD 4,881 SGD
View
B+
Retailer 13
-
$5,225 AUD
£2,890 GBP
View
Most Expensive
B
Brilliant Earth
21813004A · Oct 29
$20,884 AUD
$14,670 USD
View
13 more retailers have this diamond
Prices start from $1,479 AUDSave up to $19,405 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
$1,479 AUD