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Round|Lab Grown|IGI

3.66ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG611370735

Shape and cutting style on the report: Round brilliant

Certificate IGI LG611370735

Diamond specifications and retailer prices

From $460 USD
As of October 27, 2026
Save $3,190 USD (87%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $3,650 USD at Do Amore Diamonds · As of October 29, 2026
View at Do Amore Diamonds

About this 3.66ct lab-grown round diamond

This 3.66ct 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 LG611370735 or 611370735. Listed at 10 retailers as of October 27, 2026, with prices from $460 to $3,650, a $3,190 spread on the same certified stone. Do Amore Diamonds lists it at $3,650. 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

3.66
Carat
F
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG611370735
Dimensions10.03 × 9.93 × 5.97 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
10.03 mm9.93 mm3.66 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG611370735
Side View
Table 59.0%Crown 32.8°Girdle: Med.Pavilion 40.8°Culet: NoneDepth 59.9%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $3,650 USD|Low: $337 USD|High: $3,740 USD|Avg: $1,429 USD|-2.4%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 29, 2026
Retailer 13$411 USD
Retailer 8$460 USD
Retailer 3$471 USD
Retailer 11$806 USD
Retailer 7$810 USD
Retailer 5$964 USD
Retailer 6$1,039 USD
Retailer 4$1,067 USD
Retailer 12$1,301 USD
Retailer 9$1,429 USD
Retailer 10$1,807 USD
Retailer 2$2,076 USD
Retailer 14$2,530 USD
Do Amore Diamonds$3,650 USD

23 data points across 14 retailers

10 retailers$460 USD to $3,650 USD

Retailer 1
-
$411 USD
Price last confirmed 7 days ago
A
Retailer 2
-
$460 USD
View
B+
Retailer 3
-
$806 USD
View
A
Retailer 4
-
$810 USD
View
B+
Retailer 5
-
$1,301 USD
View
Retailer 6
-
$1,429 USD
View
Price last confirmed 7 days ago
B+
Retailer 7
-
$1,807 USD
View
B
Retailer 8
-
$2,076 USD
£1,635 GBP
View
B
Retailer 9
-
$2,530 USD
View
Most Expensive
B
Do Amore Diamonds
27-6F588CD1B · Oct 29
$3,650 USD
View
9 more retailers have this diamond
Prices start from $460 USDSave up to $3,190 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.

A
3.66ct Round
$460 USD