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Round|Lab Grown|IGI

3.51ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG32642770

Certificate IGI LG32642770

Diamond specifications and retailer prices

From $2,147 CAD
As of October 30, 2026
Save $1,109 CAD (34%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $3,256 CAD at Blue Nile · As of October 29, 2026
View at Blue Nile

About this 3.51ct lab-grown round diamond

This 3.51ct 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 LG32642770 or 32642770. Listed at 2 retailers as of October 29, 2026, with prices from $2,147 to $3,256, a $1,109 spread on the same certified stone. Blue Nile lists it at $3,256. 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

3.51
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginLab Grown
Grading LabIGI
CertificateIGI LG32642770
Dimensions9.82 × 9.78 × 5.94 mm
L/W Ratio1.00
Top View
9.82 mm9.78 mm3.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG32642770
Side View
Table 59.0%CrownGirdle: MediumPavilionCulet: NoneDepth 60.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $3,256 CAD|Low: $1,101 CAD|High: $4,261 CAD|Avg: $2,085 CAD|-23.6%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
October 13, 2026
Retailer 3$1,101 CAD
Retailer 4$1,555 CAD
Retailer 2$2,147 CAD
Blue Nile$3,256 CAD

56 data points across 4 retailers

2 retailers$2,147 CAD to $3,256 CAD

B+
Cheapest Retailer
-
$2,147 CAD
Most Expensive
B
Blue Nile
20170799 · Oct 29
$3,256 CAD
$2,331 USD
View
1 more retailer has this diamond
Prices start from $2,147 CADSave up to $1,109 CAD

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+
3.51ct Round
$2,147 CAD