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Round|Lab Grown|IGI

3.65ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG646449350

Shape and cutting style on the report: Round brilliant

Certificate IGI LG646449350

Diamond specifications and retailer prices

From $1,302 USD
CA$1,809 CAD
As of October 30, 2026
Save $421 USD (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $1,723 USD at The Diamond Guys · As of October 30, 2026
View at The Diamond Guys

About this 3.65ct lab-grown round diamond

This 3.65ct 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 LG646449350 or 646449350. Listed at 2 retailers as of October 30, 2026, with prices from $1,302 to $1,723, a $421 spread on the same certified stone. The Diamond Guys lists it at $1,723. 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

3.65
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG646449350
Dimensions10.00 × 9.95 × 5.99 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.00 mm9.95 mm3.65 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG646449350
Side View
Table 59.0%Crown 34.3°Girdle: MediumPavilion 40.8°Culet: NoneDepth 60.1%

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: $4,970 USD|Low: $264 USD|High: $4,970 USD|Avg: $1,370 USD|+56.3%
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$717 USD
Retailer 7$774 USD
Retailer 11$874 USD
Retailer 2$888 USD
Retailer 8$1,012 USD
Retailer 10$1,072 USD
Retailer 6$1,096 USD
Retailer 9$1,302 USD
Retailer 3$1,695 USD
The Diamond Guys$1,723 USD
Retailer 5$2,135 USD
Retailer 12$2,740 USD
Retailer 1$4,970 USD

60 data points across 13 retailers

2 retailers$1,302 USD to $1,723 USD

B+
Cheapest Retailer
-
$1,302 USD
CA$1,809 CAD
Most Expensive
B
The Diamond Guys
1954434384 · Oct 30
$1,723 USD
View
1 more retailer has this diamond
Prices start from $1,302 USDSave up to $421 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+
3.65ct Round
$1,302 USD