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Round|Lab Grown|IGI

11.64ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG616430551

Shape and cutting style on the report: Round brilliant

Certificate IGI LG616430551

Diamond specifications and retailer prices

From $3,660 AUD
£2,020 GBP
As of November 2, 2026
Save $19,127 AUD (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $22,788 AUD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 11.64ct lab-grown round diamond

This 11.64ct lab-grown round sits in the over five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG616430551 or 616430551. Listed at 18 retailers as of November 2, 2026, with prices from $3,660 to $22,788, a $19,127 spread on the same certified stone. Brilliant Earth lists it at $22,788. 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

11.64
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG616430551
Dimensions14.56 × 14.47 × 8.92 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
14.56 mm14.47 mm11.64 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG616430551
Side View
Table 58.0%Crown 33.6°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 61.4%

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: Nov 2
Current: $22,788 AUD|Low: $3,659 AUD|High: $22,788 AUD|Avg: $6,871 AUD
Brilliant Earth
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
Retailer 15
November 2, 2026
Retailer 8$3,660 AUD
Retailer 12$3,930 AUD
Retailer 11$4,275 AUD
Retailer 5$4,399 AUD
Retailer 13$4,558 AUD
Retailer 3$4,559 AUD
Retailer 7$5,164 AUD
Retailer 2$6,030 AUD
Retailer 10$6,132 AUD
Retailer 15$6,266 AUD
Retailer 4$7,093 AUD
Retailer 9$7,255 AUD
Retailer 14$10,401 AUD
Retailer 6$12,711 AUD
Brilliant Earth$22,788 AUD

42 data points across 15 retailers

18 retailers$3,660 AUD to $22,788 AUD

A
Cheapest Retailer
-
$3,660 AUD
£2,020 GBP
A
Retailer 2
-
$3,930 AUD
$2,754 USD
View
A
Retailer 3
-
$4,275 AUD
$2,996 USD
View
A
Retailer 4
-
$4,399 AUD
$3,083 USD
View
Final sale: no returns
B+
Retailer 5
-
$4,558 AUD
$3,194 USD
View
Retailer 6
-
$4,558 AUD
$3,194 USD
View
Price last confirmed 21 days ago
A
Retailer 7
-
$4,559 AUD
$3,195 USD
View
B+
Retailer 8
-
$5,164 AUD
$3,619 USD
View
B+
Retailer 9
-
$6,030 AUD
$4,226 USD
View
B+
Retailer 10
-
$6,132 AUD
£3,384 GBP
View
B+
Retailer 11
-
$6,266 AUD
$4,391 USD
View
B+
Retailer 12
-
$7,093 AUD
$4,971 USD
View
B+
Retailer 13
-
$7,255 AUD
€4,842 EUR
View
Retailer 14
-
$9,300 AUD
$6,517 USD
View
Price last confirmed 54 days ago
B
Retailer 15
-
$10,401 AUD
$7,289 USD
View
B
Retailer 16
-
$12,711 AUD
$8,908 USD
View
B
Retailer 17
-
$15,887 AUD
$11,134 USD
View
Most Expensive
B
Brilliant Earth
20601882A · Nov 2
$22,788 AUD
$15,970 USD
View
17 more retailers have this diamond
Prices start from $3,660 AUDSave up to $19,127 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
11.64ct Round
$3,660 AUD