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Round|Lab Grown|IGI

3.51ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG626494902

Shape and cutting style on the report: Round brilliant

Certificate IGI LG626494902

Diamond specifications and retailer prices

From $1,788 AUD
CA$1,740 CAD
As of November 2, 2026
Save $577 AUD (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $2,364 AUD at The Diamond Guys · As of November 1, 2026
View at The Diamond Guys

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 LG626494902 or 626494902. Listed at 2 retailers as of November 1, 2026, with prices from $1,788 to $2,364, a $577 spread on the same certified stone. The Diamond Guys lists it at $2,364. 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
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG626494902
Dimensions9.85 × 9.78 × 5.93 mm
L/W Ratio1.01
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
9.85 mm9.78 mm3.51 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG626494902
Side View
Table 58.0%Crown 34.1°Girdle: MediumPavilion 40.7°Culet: NoneDepth 60.4%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 2
Current: $1,510 AUD|Low: $358 AUD|High: $4,338 AUD|Avg: $1,712 AUD|-3.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
The Diamond Guys
August 3, 2026
Retailer 3$977 AUD
Retailer 4$1,051 AUD
Retailer 8$1,203 AUD
Retailer 10$1,209 AUD
Retailer 5$1,340 AUD
Retailer 7$1,453 AUD
Retailer 1$1,510 AUD
Retailer 6$1,788 AUD
Retailer 11$2,290 AUD
The Diamond Guys$2,364 AUD
Retailer 2$3,100 AUD
Retailer 9$3,710 AUD

58 data points across 12 retailers

2 retailers$1,788 AUD to $2,364 AUD

B+
Cheapest Retailer
-
$1,788 AUD
CA$1,740 CAD
Most Expensive
B
The Diamond Guys
1954434393 · Nov 1
$2,364 AUD
$1,657 USD
View
1 more retailer has this diamond
Prices start from $1,788 AUDSave up to $577 AUD

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
$1,788 AUD