CaratHunter
Plans
Radiant|Lab Grown|IGI

3.09ct F SI1 Radiant Lab Grown Diamond

ID • F/SI1 • IGI LG754564236

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG754564236

Diamond specifications and retailer prices

From $496 AUD
As of November 6, 2026
Save $3,972 AUD (89%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $4,468 AUD at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 3.09ct lab-grown radiant diamond

This 3.09ct lab-grown radiant sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG754564236 or 754564236. Listed at 17 retailers as of November 6, 2026, with prices from $496 to $4,468, a $3,972 spread on the same certified stone. Brilliant Earth lists it at $4,468. 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
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle35.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754564236
Dimensions10.57 × 7.25 × 4.84 mm
L/W Ratio1.46
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.57 mm7.25 mm3.09 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754564236
Side View
Table 65.0%Crown 37.8°Girdle: MediumPavilion 35.6°Culet: NoneDepth 66.8%

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 6
Current: $4,468 AUD|Low: $489 AUD|High: $4,570 AUD|Avg: $1,394 AUD|-1.6%
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
November 6, 2026
Retailer 18$496 AUD
Retailer 5$555 AUD
Retailer 15$575 AUD
Retailer 14$614 AUD
Retailer 17$614 AUD
Retailer 3$755 AUD
Retailer 7$827 AUD
Retailer 12$837 AUD
Retailer 2$1,078 AUD
Retailer 6$1,078 AUD
Retailer 11$1,092 AUD
Retailer 9$1,511 AUD
Retailer 4$1,802 AUD
Retailer 16$1,975 AUD
Retailer 10$2,038 AUD
Retailer 8$2,390 AUD
Retailer 13$2,461 AUD
Brilliant Earth$4,468 AUD

41 data points across 18 retailers

17 retailers$496 AUD to $4,468 AUD

A
Cheapest Retailer
-
$496 AUD
A
Retailer 2
-
$555 AUD
View
Final sale: no returns
A
Retailer 3
-
$575 AUD
View
A
Retailer 4
-
$614 AUD
View
Retailer 5
-
$614 AUD
View
Price last confirmed 13 days ago
B+
Retailer 6
-
$827 AUD
View
A
Retailer 7
-
$837 AUD
View
A
Retailer 8
-
$1,078 AUD
View
A
Retailer 9
-
$1,078 AUD
View
A
Retailer 10
-
$1,092 AUD
View
A
Retailer 11
-
$1,511 AUD
View
B+
Retailer 12
-
$1,802 AUD
View
B+
Retailer 13
-
$1,975 AUD
View
B+
Retailer 14
-
$2,038 AUD
View
B+
Retailer 15
-
$2,390 AUD
View
B+
Retailer 16
-
$2,461 AUD
View
Most Expensive
B
Brilliant Earth
18587410A · Nov 6
$4,468 AUD
$3,070 USD
View
16 more retailers have this diamond
Prices start from $496 AUDSave up to $3,972 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 Radiant
$496 AUD