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Round|Lab Grown|IGI

1.28ct F IF Round Lab Grown Diamond

ID • F/IF • IGI LG668433294

Shape and cutting style on the report: Round brilliant

Certificate IGI LG668433294

Diamond specifications and retailer prices

From $422 NZD
As of November 5, 2026
Save $2,531 NZD (86%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $2,953 NZD at Brilliant Earth · As of November 5, 2026
View at Brilliant Earth

About this 1.28ct lab-grown round diamond

This 1.28ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG668433294 or 668433294. Listed at 23 retailers as of November 5, 2026, with prices from $422 to $2,953, a $2,531 spread on the same certified stone. Brilliant Earth lists it at $2,953. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.4°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG668433294
Dimensions6.94 × 6.98 × 4.32 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
6.94 mm6.98 mm1.28 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG668433294
Side View
Table 57.0%Crown 35.4°Girdle: MediumPavilion 41.1°Culet: NoneDepth 62.1%

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 5
Current: $2,953 NZD|Low: $404 NZD|High: $3,398 NZD|Avg: $1,195 NZD|-13.1%
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
November 6, 2026
Retailer 12$422 NZD
Retailer 5$471 NZD
Retailer 3$523 NZD
Retailer 13$703 NZD
Retailer 11$900 NZD
Retailer 9$945 NZD
Retailer 4$953 NZD
Retailer 2$970 NZD
Retailer 10$1,277 NZD
Retailer 8$1,685 NZD
Retailer 7$1,957 NZD
Retailer 6$2,087 NZD
Brilliant Earth$2,953 NZD

44 data points across 13 retailers

23 retailers$422 NZD to $2,953 NZD

A
Cheapest Retailer
-
$422 NZD
A
Retailer 2
-
$471 NZD
View
Final sale: no returns
A
Retailer 3
-
$489 NZD
View
Retailer 4
-
$523 NZD
View
Price last confirmed 12 days ago
A
Retailer 5
-
$523 NZD
View
A
Retailer 6
-
$591 NZD
View
A
Retailer 7
-
$703 NZD
View
A
Retailer 8
-
$900 NZD
View
A
Retailer 9
-
$945 NZD
View
A
Retailer 10
-
$953 NZD
View
A
Retailer 11
-
$970 NZD
View
B+
Retailer 12
-
$1,247 NZD
View
B+
Retailer 13
-
$1,277 NZD
View
B+
Retailer 14
-
$1,389 NZD
View
B+
Retailer 15
-
$1,679 NZD
View
B+
Retailer 16
-
$1,685 NZD
View
B+
Retailer 17
-
$1,685 NZD
View
B+
Retailer 18
-
$1,770 NZD
View
B+
Retailer 19
-
$1,814 NZD
View
B
Retailer 20
-
$1,957 NZD
View
B+
Retailer 21
-
$2,087 NZD
View
B
Retailer 22
-
$2,900 NZD
View
Most Expensive
B
Brilliant Earth
15028331A · Nov 5
$2,953 NZD
$1,660 USD
View
22 more retailers have this diamond
Prices start from $422 NZDSave up to $2,531 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
1.28ct Round
$422 NZD