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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 $656 AUD
$460 USD
As of October 27, 2026
Save $4,552 AUD (87%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $5,208 AUD 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 $656 to $5,208, a $4,552 spread on the same certified stone. Do Amore Diamonds lists it at $5,208. 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
Colour
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 27
Current: $5,208 AUD|Low: $481 AUD|High: $5,337 AUD|Avg: $2,039 AUD|-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$586 AUD
Retailer 8$656 AUD
Retailer 3$672 AUD
Retailer 11$1,150 AUD
Retailer 7$1,156 AUD
Retailer 5$1,376 AUD
Retailer 6$1,483 AUD
Retailer 4$1,523 AUD
Retailer 12$1,857 AUD
Retailer 9$2,039 AUD
Retailer 10$2,578 AUD
Retailer 2$2,963 AUD
Retailer 14$3,610 AUD
Do Amore Diamonds$5,208 AUD

23 data points across 14 retailers

10 retailers$656 AUD to $5,208 AUD

Retailer 1
-
$586 AUD
$411 USD
Price last confirmed 7 days ago
A
Retailer 2
-
$656 AUD
$460 USD
View
B+
Retailer 3
-
$1,150 AUD
$806 USD
View
A
Retailer 4
-
$1,156 AUD
$810 USD
View
B+
Retailer 5
-
$1,857 AUD
$1,301 USD
View
Retailer 6
-
$2,039 AUD
$1,429 USD
View
Price last confirmed 7 days ago
B+
Retailer 7
-
$2,578 AUD
$1,807 USD
View
B
Retailer 8
-
$2,963 AUD
£1,635 GBP
View
B
Retailer 9
-
$3,610 AUD
$2,530 USD
View
Most Expensive
B
Do Amore Diamonds
27-6F588CD1B · Oct 29
$5,208 AUD
$3,650 USD
View
9 more retailers have this diamond
Prices start from $656 AUDSave up to $4,552 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.

A
3.66ct Round
$656 AUD