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Round|Lab Grown|IGI

1.23ct F FL Round Lab Grown Diamond

ID • F/FL • IGI LG818644662

Shape and cutting style on the report: Round brilliant

Certificate IGI LG818644662

Diamond specifications and retailer prices

From $608 NZD
As of November 4, 2026
Save $2,673 NZD (81%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $3,282 NZD at Brilliant Earth · As of November 3, 2026
View at Brilliant Earth

About this 1.23ct lab-grown round diamond

This 1.23ct lab-grown round sits in the classic one-carat band, graded F colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG818644662 or 818644662. Listed at 19 retailers as of November 3, 2026, with prices from $608 to $3,282, a $2,673 spread on the same certified stone. Brilliant Earth lists it at $3,282. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.23
Carat
F
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.6°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818644662
Dimensions6.80 × 6.85 × 4.24 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.80 mm6.85 mm1.23 ctF / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818644662
Side View
Table 58.0%Crown 35.6°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.1%

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 4
Current: $3,282 NZD|Low: $608 NZD|High: $4,311 NZD|Avg: $1,610 NZD|-23.9%
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
November 5, 2026
Retailer 4$608 NZD
Retailer 3$674 NZD
Retailer 13$905 NZD
Retailer 12$949 NZD
Retailer 7$1,086 NZD
Retailer 9$1,086 NZD
Retailer 11$1,162 NZD
Retailer 6$1,183 NZD
Retailer 10$1,756 NZD
Retailer 5$2,166 NZD
Retailer 8$2,422 NZD
Retailer 2$2,693 NZD
Brilliant Earth$3,282 NZD

43 data points across 13 retailers

19 retailers$608 NZD to $3,282 NZD

A
Cheapest Retailer
-
$608 NZD
Final sale: no returns
A
Retailer 2
-
$632 NZD
View
Retailer 3
-
$665 NZD
View
Price last confirmed 65 days ago
Retailer 4
-
$674 NZD
View
Price last confirmed 11 days ago
A
Retailer 5
-
$749 NZD
View
B+
Retailer 6
-
$905 NZD
View
A
Retailer 7
-
$949 NZD
View
B+
Retailer 8
-
$1,086 NZD
View
B+
Retailer 9
-
$1,086 NZD
View
B+
Retailer 10
-
$1,162 NZD
View
B+
Retailer 11
-
$1,183 NZD
View
B+
Retailer 12
-
$1,206 NZD
View
B
Retailer 13
-
$1,756 NZD
View
B
Retailer 14
-
$2,166 NZD
View
B
Retailer 15
-
$2,249 NZD
View
B
Retailer 16
-
$2,416 NZD
View
B
Retailer 17
-
$2,422 NZD
View
B
Retailer 18
-
$2,693 NZD
View
Most Expensive
B
Brilliant Earth
21370465A · Nov 3
$3,282 NZD
$1,850 USD
View
18 more retailers have this diamond
Prices start from $608 NZDSave up to $2,673 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
1.23ct Round
$608 NZD