Round|Lab Grown|IGI

3.11ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG792619889

Shape and cutting style on the report: Round brilliant

Certificate IGI LG792619889

Diamond specifications and retailer prices

From $427 USD
As of October 29, 2026
Save $1,693 USD (80%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $2,120 USD at Brilliant Earth · As of October 28, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG792619889 or 792619889. Listed at 17 retailers as of October 28, 2026, with prices from $427 to $2,120, a $1,693 spread on the same certified stone. Brilliant Earth lists it at $2,120. 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
G
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG792619889
Dimensions9.39 × 9.43 × 5.73 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.39 mm9.43 mm3.11 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG792619889
Side View
Table 58.0%Crown 34.5°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.9%

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: Oct 29
Current: $2,120 USD|Low: $427 USD|High: $2,180 USD|Avg: $1,186 USD|-2.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 8$427 USD
Retailer 5$675 USD
Retailer 10$833 USD
Retailer 9$835 USD
Retailer 4$844 USD
Retailer 2$871 USD
Retailer 7$1,272 USD
Retailer 6$1,800 USD
Retailer 3$1,956 USD
Brilliant Earth$2,120 USD

41 data points across 10 retailers

17 retailers$427 USD to $2,120 USD

A
Cheapest Retailer
-
$427 USD
A
Retailer 2
-
$478 USD
View
A
Retailer 3
-
$530 USD
View
A
Retailer 4
-
$530 USD
View
A
Retailer 5
-
$675 USD
View
A
Retailer 6
-
$833 USD
View
B+
Retailer 7
-
$835 USD
View
A
Retailer 8
-
$844 USD
€804 EUR
View
A
Retailer 9
-
$871 USD
£686 GBP
View
B+
Retailer 10
-
$1,043 USD
View
B
Retailer 11
-
$1,272 USD
View
Retailer 12
-
$1,366 USD
View
Price last confirmed 45 days ago
B
Retailer 13
-
$1,702 USD
View
B
Retailer 14
-
$1,735 USD
View
Retailer 15
-
$1,800 USD
View
Price last confirmed 13 days ago
B
Retailer 16
-
$1,956 USD
£1,540 GBP
View
Most Expensive
B
Brilliant Earth
18909503A · Oct 28
$2,120 USD
View
16 more retailers have this diamond
Prices start from $427 USDSave up to $1,693 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
$427 USD