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Round|Lab Grown|IGI

2.91ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG624415928

Shape and cutting style on the report: Round brilliant

Certificate IGI LG624415928

Diamond specifications and retailer prices

From $1,109 USD
CA$1,540 CAD
As of October 30, 2026
Save $358 USD (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,467 USD at The Diamond Guys · As of November 1, 2026
View at The Diamond Guys

About this 2.91ct lab-grown round diamond

This 2.91ct lab-grown round sits in the two to three carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG624415928 or 624415928. Listed at 2 retailers as of October 30, 2026, with prices from $1,109 to $1,467, a $358 spread on the same certified stone. The Diamond Guys lists it at $1,467. 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

2.91
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG624415928
Dimensions9.15 × 9.11 × 5.64 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
9.15 mm9.11 mm2.91 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG624415928
Side View
Table 56.0%Crown 34.2°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 61.7%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 30
Current: $996 USD|Low: $227 USD|High: $3,960 USD|Avg: $1,337 USD|-5.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
The Diamond Guys
August 3, 2026
Retailer 5$672 USD
Retailer 8$770 USD
Retailer 10$771 USD
Retailer 7$912 USD
Retailer 1$996 USD
Retailer 3$1,086 USD
Retailer 6$1,109 USD
The Diamond Guys$1,467 USD
Retailer 2$1,505 USD
Retailer 9$2,330 USD
Retailer 4$2,380 USD

53 data points across 11 retailers

2 retailers$1,109 USD to $1,467 USD

B+
Cheapest Retailer
-
$1,109 USD
CA$1,540 CAD
Most Expensive
B
The Diamond Guys
1954434461 · Nov 1
$1,467 USD
View
1 more retailer has this diamond
Prices start from $1,109 USDSave up to $358 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.

B+
2.91ct Round
$1,109 USD