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Round|Lab Grown|IGI

1.28ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG739546432

Shape and cutting style on the report: Round brilliant

Certificate IGI LG739546432

Diamond specifications and retailer prices

From $380 NZD
As of November 4, 2026
Save $2,565 NZD (87%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: $2,945 NZD at Brilliant Earth · As of November 4, 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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG739546432 or 739546432. Listed at 23 retailers as of November 4, 2026, with prices from $380 to $2,945, a $2,565 spread on the same certified stone. Brilliant Earth lists it at $2,945. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG739546432
Dimensions6.96 × 7.00 × 4.29 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
6.96 mm7.00 mm1.28 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG739546432
Side View
Table 58.0%Crown 35.2°Girdle: MediumPavilion 40.8°Culet: NoneDepth 61.5%

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: $2,945 NZD|Low: $380 NZD|High: $2,945 NZD|Avg: $1,089 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
November 5, 2026
Retailer 8$380 NZD
Retailer 6$428 NZD
Retailer 4$603 NZD
Retailer 13$729 NZD
Retailer 11$738 NZD
Retailer 2$761 NZD
Retailer 5$907 NZD
Retailer 10$1,043 NZD
Retailer 12$1,086 NZD
Retailer 3$1,247 NZD
Retailer 9$1,456 NZD
Retailer 7$1,973 NZD
Retailer 14$2,120 NZD
Brilliant Earth$2,945 NZD

39 data points across 14 retailers

23 retailers$380 NZD to $2,945 NZD

Retailer 1
-
$346 NZD
Price last confirmed 44 days ago
Retailer 2
-
$346 NZD
View
Price last confirmed 26 days ago
A
Retailer 3
-
$380 NZD
View
Final sale: no returns
Retailer 4
-
$401 NZD
View
Price last confirmed 44 days ago
Retailer 5
-
$422 NZD
View
Price last confirmed 42 days ago
Retailer 6
-
$428 NZD
View
Price last confirmed 24 days ago
Retailer 7
-
$428 NZD
View
Price last confirmed 34 days ago
B+
Retailer 8
-
$603 NZD
View
A
Retailer 9
-
$729 NZD
View
A
Retailer 10
-
$738 NZD
View
A
Retailer 11
-
$761 NZD
View
A
Retailer 12
-
$907 NZD
View
A
Retailer 13
-
$1,043 NZD
View
A
Retailer 14
-
$1,086 NZD
View
A
Retailer 15
-
$1,247 NZD
View
Retailer 16
-
$1,377 NZD
View
Price last confirmed 36 days ago
Retailer 17
-
$1,377 NZD
View
Price last confirmed 40 days ago
Retailer 18
-
$1,382 NZD
View
Price last confirmed 10 days ago
B+
Retailer 19
-
$1,456 NZD
View
B+
Retailer 20
-
$1,973 NZD
View
B+
Retailer 21
-
$2,086 NZD
View
B+
Retailer 22
-
$2,120 NZD
View
Most Expensive
B
Brilliant Earth
16216592A · Nov 4
$2,945 NZD
$1,660 USD
View
22 more retailers have this diamond
Prices start from $380 NZDSave up to $2,565 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
$380 NZD