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Round|Lab Grown|IGI

1.21ct F FL Round Lab Grown Diamond

ID • F/FL • IGI LG788625368

Shape and cutting style on the report: Round brilliant

Certificate IGI LG788625368

Diamond specifications and retailer prices

From $472 NZD
As of November 4, 2026
Save $2,491 NZD (84%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $2,963 NZD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.21ct lab-grown round diamond

This 1.21ct 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 LG788625368 or 788625368. Listed at 18 retailers as of November 4, 2026, with prices from $472 to $2,963, a $2,491 spread on the same certified stone. Brilliant Earth lists it at $2,963. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
F
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG788625368
Dimensions6.92 × 6.86 × 4.22 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
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
6.92 mm6.86 mm1.21 ctF / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG788625368
Side View
Table 57.0%Crown 33.6°Girdle: MediumPavilion 41.1°Culet: NoneDepth 61.2%

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: Nov 4
Current: $2,963 NZD|Low: $472 NZD|High: $4,240 NZD|Avg: $1,446 NZD|-30.1%
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
Retailer 16
Retailer 17
November 5, 2026
Retailer 11$472 NZD
Retailer 3$491 NZD
Retailer 8$561 NZD
Retailer 7$843 NZD
Retailer 13$885 NZD
Retailer 5$928 NZD
Retailer 6$965 NZD
Retailer 2$979 NZD
Retailer 9$1,006 NZD
Retailer 14$1,130 NZD
Retailer 17$1,691 NZD
Retailer 15$1,692 NZD
Retailer 16$1,778 NZD
Retailer 4$1,822 NZD
Retailer 10$2,095 NZD
Retailer 12$2,404 NZD
Brilliant Earth$2,963 NZD

34 data points across 17 retailers

18 retailers$472 NZD to $2,963 NZD

A
Cheapest Retailer
-
$472 NZD
Final sale: no returns
A
Retailer 2
-
$491 NZD
View
Retailer 3
-
$561 NZD
View
Price last confirmed 11 days ago
Retailer 4
-
$568 NZD
View
Price last confirmed 65 days ago
A
Retailer 5
-
$843 NZD
View
A
Retailer 6
-
$885 NZD
View
A
Retailer 7
-
$928 NZD
View
A
Retailer 8
-
$965 NZD
View
A
Retailer 9
-
$979 NZD
View
B+
Retailer 10
-
$1,006 NZD
View
B+
Retailer 11
-
$1,130 NZD
View
B+
Retailer 12
-
$1,691 NZD
View
B
Retailer 13
-
$1,692 NZD
View
B+
Retailer 14
-
$1,778 NZD
View
B+
Retailer 15
-
$1,822 NZD
View
B+
Retailer 16
-
$2,095 NZD
View
B
Retailer 17
-
$2,404 NZD
View
Most Expensive
B
Brilliant Earth
21419099A · Nov 4
$2,963 NZD
$1,670 USD
View
17 more retailers have this diamond
Prices start from $472 NZDSave up to $2,491 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
1.21ct Round
$472 NZD