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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 $720 NZD
As of November 5, 2026
Save $3,195 NZD (82%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,914 NZD 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 $720 to $3,914, a $3,195 spread on the same certified stone. Brilliant Earth lists it at $3,914. 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

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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: Nov 5
Current: $3,914 NZD|Low: $675 NZD|High: $3,914 NZD|Avg: $1,737 NZD
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$720 NZD
Retailer 6$806 NZD
Retailer 7$893 NZD
Retailer 15$893 NZD
Retailer 10$1,154 NZD
Retailer 8$1,234 NZD
Retailer 2$1,394 NZD
Retailer 14$1,414 NZD
Retailer 9$1,438 NZD
Retailer 3$1,580 NZD
Retailer 5$1,795 NZD
Retailer 11$2,168 NZD
Retailer 4$2,868 NZD
Retailer 12$3,485 NZD
Brilliant Earth$3,914 NZD

37 data points across 15 retailers

16 retailers$720 NZD to $3,914 NZD

A
Cheapest Retailer
-
$720 NZD
A
Retailer 2
-
$806 NZD
View
Retailer 3
-
$893 NZD
View
Price last confirmed 13 days ago
A
Retailer 4
-
$893 NZD
View
A
Retailer 5
-
$1,154 NZD
View
A
Retailer 6
-
$1,234 NZD
View
A
Retailer 7
-
$1,394 NZD
View
B+
Retailer 8
-
$1,414 NZD
View
A
Retailer 9
-
$1,438 NZD
View
A
Retailer 10
-
$1,580 NZD
View
B+
Retailer 11
-
$1,795 NZD
View
B+
Retailer 12
-
$2,168 NZD
View
B
Retailer 13
-
$2,868 NZD
View
Retailer 14
-
$3,382 NZD
View
Price last confirmed 41 days ago
B
Retailer 15
-
$3,485 NZD
View
Most Expensive
B
Brilliant Earth
18656417A · Nov 5
$3,914 NZD
$2,170 USD
View
15 more retailers have this diamond
Prices start from $720 NZDSave up to $3,195 NZD

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
$720 NZD