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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 $399 USD
As of November 5, 2026
Save $1,771 USD (82%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $2,170 USD 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 $399 to $2,170, a $1,771 spread on the same certified stone. Brilliant Earth lists it at $2,170. 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
Color
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: $2,170 USD|Low: $374 USD|High: $2,170 USD|Avg: $963 USD
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$399 USD
Retailer 6$447 USD
Retailer 7$495 USD
Retailer 15$495 USD
Retailer 10$640 USD
Retailer 8$684 USD
Retailer 2$773 USD
Retailer 14$784 USD
Retailer 9$797 USD
Retailer 3$876 USD
Retailer 5$995 USD
Retailer 11$1,202 USD
Retailer 4$1,590 USD
Retailer 12$1,932 USD
Brilliant Earth$2,170 USD

37 data points across 15 retailers

16 retailers$399 USD to $2,170 USD

A
Cheapest Retailer
-
$399 USD
A
Retailer 2
-
$447 USD
View
Retailer 3
-
$495 USD
View
Price last confirmed 12 days ago
A
Retailer 4
-
$495 USD
View
A
Retailer 5
-
$640 USD
View
A
Retailer 6
-
$684 USD
View
A
Retailer 7
-
$773 USD
View
B+
Retailer 8
-
$784 USD
View
A
Retailer 9
-
$797 USD
View
A
Retailer 10
-
$876 USD
View
B+
Retailer 11
-
$995 USD
View
B+
Retailer 12
-
$1,202 USD
View
B
Retailer 13
-
$1,590 USD
View
Retailer 14
-
$1,875 USD
View
Price last confirmed 40 days ago
B
Retailer 15
-
$1,932 USD
View
Most Expensive
B
Brilliant Earth
18656417A · Nov 5
$2,170 USD
View
15 more retailers have this diamond
Prices start from $399 USDSave up to $1,771 USD

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
$399 USD