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3.67ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG631415591

Shape and cutting style on the report: Round brilliant

Certificate IGI LG631415591

Diamond specifications and retailer prices

From $1,309 USD
CA$1,819 CAD
As of October 30, 2026
Save $423 USD (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,732 USD at The Diamond Guys · As of October 30, 2026
View at The Diamond Guys

About this 3.67ct lab-grown round diamond

This 3.67ct 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 LG631415591 or 631415591. Listed at 2 retailers as of October 30, 2026, with prices from $1,309 to $1,732, a $423 spread on the same certified stone. The Diamond Guys lists it at $1,732. 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

3.67
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG631415591
Dimensions10.00 × 9.95 × 6.05 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
10.00 mm9.95 mm3.67 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG631415591
Side View
Table 58.0%Crown 34.2°Girdle: MediumPavilion 40.9°Culet: NoneDepth 60.7%

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: $2,138 USD|Low: $261 USD|High: $5,000 USD|Avg: $1,443 USD|-4.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
The Diamond Guys
August 3, 2026
Retailer 4$721 USD
Retailer 6$770 USD
Retailer 11$869 USD
Retailer 2$879 USD
Retailer 7$1,022 USD
Retailer 10$1,060 USD
Retailer 5$1,092 USD
Retailer 8$1,309 USD
Retailer 3$1,700 USD
The Diamond Guys$1,732 USD
Retailer 1$2,138 USD
Retailer 12$2,710 USD
Retailer 9$5,000 USD

57 data points across 13 retailers

2 retailers$1,309 USD to $1,732 USD

B+
Cheapest Retailer
-
$1,309 USD
CA$1,819 CAD
Most Expensive
B
The Diamond Guys
1954434375 · Oct 30
$1,732 USD
View
1 more retailer has this diamond
Prices start from $1,309 USDSave up to $423 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+
3.67ct Round
$1,309 USD