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Round|Lab Grown|IGI

1.28ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG786633884

Shape and cutting style on the report: Round brilliant

Certificate IGI LG786633884

Diamond specifications and retailer prices

From $461 NZD
As of November 3, 2026
Save $3,938 NZD (90%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $4,400 NZD at Brilliant Earth · As of November 3, 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 LG786633884 or 786633884. Listed at 25 retailers as of November 3, 2026, with prices from $461 to $4,400, a $3,938 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 angle35.3°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG786633884
Dimensions6.91 × 6.95 × 4.31 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
6.91 mm6.95 mm1.28 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG786633884
Side View
Table 58.0%Crown 35.3°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.3%

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: $4,400 NZD|Low: $444 NZD|High: $4,400 NZD|Avg: $1,306 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
Retailer 15
Retailer 16
November 5, 2026
Retailer 3$461 NZD
Retailer 14$514 NZD
Retailer 7$534 NZD
Retailer 5$571 NZD
Retailer 4$772 NZD
Retailer 16$852 NZD
Retailer 13$986 NZD
Retailer 6$1,022 NZD
Retailer 11$1,025 NZD
Retailer 2$1,079 NZD
Retailer 12$1,403 NZD
Retailer 10$1,756 NZD
Retailer 8$1,838 NZD
Retailer 15$2,182 NZD
Retailer 9$2,283 NZD
Brilliant Earth$4,400 NZD

44 data points across 16 retailers

25 retailers$461 NZD to $4,400 NZD

A
Cheapest Retailer
-
$461 NZD
A
Retailer 2
-
$514 NZD
View
Final sale: no returns
A
Retailer 3
-
$534 NZD
View
Retailer 4
-
$571 NZD
View
Price last confirmed 11 days ago
A
Retailer 5
-
$571 NZD
View
A
Retailer 6
-
$635 NZD
View
A
Retailer 7
-
$772 NZD
View
A
Retailer 8
-
$852 NZD
View
A
Retailer 9
-
$986 NZD
View
A
Retailer 10
-
$1,022 NZD
View
A
Retailer 11
-
$1,025 NZD
View
A
Retailer 12
-
$1,079 NZD
View
A
Retailer 13
-
$1,288 NZD
View
A
Retailer 14
-
$1,403 NZD
View
B+
Retailer 15
-
$1,465 NZD
View
B+
Retailer 16
-
$1,756 NZD
View
B+
Retailer 17
-
$1,838 NZD
View
B+
Retailer 18
-
$1,845 NZD
View
B+
Retailer 19
-
$1,928 NZD
View
B+
Retailer 20
-
$2,012 NZD
View
B+
Retailer 21
-
$2,182 NZD
View
B+
Retailer 22
-
$2,283 NZD
View
B+
Retailer 23
-
$2,455 NZD
View
Retailer 24
-
$4,055 NZD
View
Price last confirmed 9 days ago
Most Expensive
B
Brilliant Earth
18980939A · Nov 3
$4,400 NZD
$2,480 USD
View
24 more retailers have this diamond
Prices start from $461 NZDSave up to $3,938 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
$461 NZD