CaratHunter
Plans
Round|Lab Grown|IGI

1.28ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG779630639

Shape and cutting style on the report: Round brilliant

Certificate IGI LG779630639

Diamond specifications and retailer prices

From $472 NZD
As of November 3, 2026
Save $3,928 NZD (89%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $4,400 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 LG779630639 or 779630639. Listed at 25 retailers as of November 3, 2026, with prices from $472 to $4,400, a $3,928 spread on the same certified stone. Brilliant Earth lists it at $4,400. 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 angle34.9°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG779630639
Dimensions6.93 × 6.98 × 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
6.93 mm6.98 mm1.28 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG779630639
Side View
Table 59.0%Crown 34.9°Girdle: MediumPavilion 41.1°Culet: NoneDepth 61.8%

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 3
Current: $1,105 NZD|Low: $472 NZD|High: $2,489 NZD|Avg: $1,193 NZD|+2.1%
Retailer 1
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
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
November 5, 2026
Retailer 10$472 NZD
Retailer 11$527 NZD
Retailer 5$546 NZD
Retailer 22$585 NZD
Retailer 6$784 NZD
Retailer 15$869 NZD
Retailer 16$940 NZD
Retailer 20$1,008 NZD
Retailer 4$1,034 NZD
Retailer 17$1,047 NZD
Retailer 1$1,105 NZD
Retailer 2$1,116 NZD
Retailer 8$1,291 NZD
Retailer 18$1,433 NZD
Retailer 19$1,499 NZD
Retailer 13$1,749 NZD
Retailer 14$1,877 NZD
Retailer 3$1,879 NZD
Retailer 9$1,969 NZD
Retailer 21$2,209 NZD
Retailer 12$2,335 NZD
Retailer 7$2,489 NZD

27 data points across 22 retailers

25 retailers$472 NZD to $4,400 NZD

A
Cheapest Retailer
-
$472 NZD
A
Retailer 2
-
$527 NZD
View
Final sale: no returns
A
Retailer 3
-
$546 NZD
View
A
Retailer 4
-
$585 NZD
View
Retailer 5
-
$589 NZD
View
Price last confirmed 11 days ago
A
Retailer 6
-
$658 NZD
View
A
Retailer 7
-
$784 NZD
View
A
Retailer 8
-
$869 NZD
View
A
Retailer 9
-
$940 NZD
View
A
Retailer 10
-
$1,008 NZD
View
A
Retailer 11
-
$1,034 NZD
View
A
Retailer 12
-
$1,047 NZD
View
A
Retailer 13
-
$1,105 NZD
View
A
Retailer 14
-
$1,116 NZD
View
A
Retailer 15
-
$1,291 NZD
View
A
Retailer 16
-
$1,433 NZD
View
B+
Retailer 17
-
$1,499 NZD
View
Retailer 18
-
$1,749 NZD
View
Price last confirmed 7 days ago
B+
Retailer 19
-
$1,877 NZD
View
B+
Retailer 20
-
$1,879 NZD
View
B+
Retailer 21
-
$1,969 NZD
View
B+
Retailer 22
-
$2,209 NZD
View
B+
Retailer 23
-
$2,335 NZD
View
B+
Retailer 24
-
$2,489 NZD
View
Most Expensive
B
Brilliant Earth
18530693A · Nov 4
$4,400 NZD
$2,480 USD
View
24 more retailers have this diamond
Prices start from $472 NZDSave up to $3,928 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
$472 NZD