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Round|Lab Grown|IGI

3.11ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG706512306

Shape and cutting style on the report: Round brilliant

Certificate IGI LG706512306

Diamond specifications and retailer prices

From $570 AUD
As of November 5, 2026
Save $2,530 AUD (82%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,100 AUD at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

About this 3.11ct lab-grown round diamond

This 3.11ct lab-grown round 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 LG706512306 or 706512306. Listed at 16 retailers as of November 5, 2026, with prices from $570 to $3,100, a $2,530 spread on the same certified stone. Brilliant Earth lists it at $3,100. 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

3.11
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG706512306
Dimensions9.32 × 9.34 × 5.79 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.32 mm9.34 mm3.11 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG706512306
Side View
Table 57.0%Crown 34.6°Girdle: MediumPavilion 41°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
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: Nov 5
Current: $3,100 AUD|Low: $534 AUD|High: $3,100 AUD|Avg: $1,375 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
Retailer 15
November 6, 2026
Retailer 13$570 AUD
Retailer 6$639 AUD
Retailer 7$707 AUD
Retailer 15$707 AUD
Retailer 10$914 AUD
Retailer 8$977 AUD
Retailer 2$1,104 AUD
Retailer 14$1,120 AUD
Retailer 9$1,139 AUD
Retailer 3$1,251 AUD
Retailer 5$1,421 AUD
Retailer 11$1,717 AUD
Retailer 4$2,271 AUD
Retailer 12$2,760 AUD
Brilliant Earth$3,100 AUD

37 data points across 15 retailers

16 retailers$570 AUD to $3,100 AUD

A
Cheapest Retailer
-
$570 AUD
A
Retailer 2
-
$639 AUD
View
Retailer 3
-
$707 AUD
View
Price last confirmed 12 days ago
A
Retailer 4
-
$707 AUD
View
A
Retailer 5
-
$914 AUD
View
A
Retailer 6
-
$977 AUD
View
A
Retailer 7
-
$1,104 AUD
View
B+
Retailer 8
-
$1,120 AUD
View
A
Retailer 9
-
$1,139 AUD
View
A
Retailer 10
-
$1,251 AUD
View
B+
Retailer 11
-
$1,421 AUD
View
B+
Retailer 12
-
$1,717 AUD
View
B
Retailer 13
-
$2,271 AUD
View
Retailer 14
-
$2,678 AUD
View
Price last confirmed 40 days ago
B
Retailer 15
-
$2,760 AUD
View
Most Expensive
B
Brilliant Earth
18656417A · Nov 5
$3,100 AUD
$2,170 USD
View
15 more retailers have this diamond
Prices start from $570 AUDSave up to $2,530 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
3.11ct Round
$570 AUD