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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 $4,559 NZD
£2,020 GBP
As of November 2, 2026
Save $23,824 NZD (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $28,383 NZD 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 $4,559 to $28,383, a $23,824 spread on the same certified stone. Brilliant Earth lists it at $28,383. 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: $28,383 NZD|Low: $4,558 NZD|High: $28,383 NZD|Avg: $8,556 NZD
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$4,559 NZD
Retailer 12$4,895 NZD
Retailer 11$5,325 NZD
Retailer 5$5,479 NZD
Retailer 13$5,677 NZD
Retailer 3$5,678 NZD
Retailer 7$6,432 NZD
Retailer 2$7,511 NZD
Retailer 10$7,638 NZD
Retailer 15$7,804 NZD
Retailer 4$8,835 NZD
Retailer 9$9,036 NZD
Retailer 14$12,955 NZD
Retailer 6$15,832 NZD
Brilliant Earth$28,383 NZD

43 data points across 15 retailers

18 retailers$4,559 NZD to $28,383 NZD

A
Cheapest Retailer
-
$4,559 NZD
£2,020 GBP
A
Retailer 2
-
$4,895 NZD
$2,754 USD
View
A
Retailer 3
-
$5,325 NZD
$2,996 USD
View
A
Retailer 4
-
$5,479 NZD
$3,083 USD
View
Final sale: no returns
B+
Retailer 5
-
$5,677 NZD
$3,194 USD
View
Retailer 6
-
$5,677 NZD
$3,194 USD
View
Price last confirmed 21 days ago
A
Retailer 7
-
$5,678 NZD
$3,195 USD
View
B+
Retailer 8
-
$6,432 NZD
$3,619 USD
View
B+
Retailer 9
-
$7,511 NZD
$4,226 USD
View
B+
Retailer 10
-
$7,638 NZD
£3,384 GBP
View
B+
Retailer 11
-
$7,804 NZD
$4,391 USD
View
B+
Retailer 12
-
$8,835 NZD
$4,971 USD
View
B+
Retailer 13
-
$9,036 NZD
€4,842 EUR
View
Retailer 14
-
$11,583 NZD
$6,517 USD
View
Price last confirmed 54 days ago
B
Retailer 15
-
$12,955 NZD
$7,289 USD
View
B
Retailer 16
-
$15,832 NZD
$8,908 USD
View
B
Retailer 17
-
$19,788 NZD
$11,134 USD
View
Most Expensive
B
Brilliant Earth
20601882A · Nov 2
$28,383 NZD
$15,970 USD
View
17 more retailers have this diamond
Prices start from $4,559 NZDSave up to $23,824 NZD

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
$4,559 NZD