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Round|Lab Grown|IGI

1.28ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG713511172

Shape and cutting style on the report: Round brilliant

Certificate IGI LG713511172

Diamond specifications and retailer prices

From $346 NZD
As of October 29, 2026
Save $1,125 NZD (76%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $2,014 NZD at MOH London · As of October 21, 2026
View at MOH London

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 LG713511172 or 713511172. Listed at 15 retailers as of October 29, 2026, with a 325% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG713511172
Dimensions6.95 × 6.99 × 4.27 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
6.95 mm6.99 mm1.28 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG713511172
Side View
Table 57.0%Crown 35.2°Girdle: MediumPavilion 40.4°Culet: NoneDepth 61.3%

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: Oct 29
Current: $2,014 NZD|Low: $332 NZD|High: $2,025 NZD|Avg: $864 NZD|+0.6%
MOH London
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
October 30, 2026
Retailer 11$346 NZD
Retailer 14$385 NZD
Retailer 4$401 NZD
Retailer 13$428 NZD
Retailer 12$594 NZD
Retailer 2$692 NZD
Retailer 8$734 NZD
Retailer 7$779 NZD
Retailer 3$869 NZD
Retailer 9$1,043 NZD
Retailer 6$1,247 NZD
Retailer 5$1,377 NZD
Retailer 10$1,382 NZD
MOH London$2,014 NZD

40 data points across 14 retailers

15 retailers$346 NZD to $1,471 NZD

A
Cheapest Retailer
-
$346 NZD
Retailer 2
-
$401 NZD
View
Price last confirmed 9 days ago
Retailer 3
-
$428 NZD
View
Price last confirmed 11 days ago
Retailer 4
-
$428 NZD
View
Price last confirmed 9 days ago
B+
Retailer 5
-
$594 NZD
View
A
Retailer 6
-
$692 NZD
View
Retailer 7
-
$734 NZD
View
Price last confirmed 9 days ago
A
Retailer 8
-
$779 NZD
View
A
Retailer 9
-
$869 NZD
View
Retailer 10
-
$1,043 NZD
View
Price last confirmed 9 days ago
A
Retailer 11
-
$1,247 NZD
View
Retailer 12
-
$1,377 NZD
View
Price last confirmed 9 days ago
B+
Retailer 13
-
$1,382 NZD
View
B+
Retailer 14
-
$1,471 NZD
View
Most Expensive
MOH London
LG713511172 · Oct 21
$2,014 NZD
£894 GBP
View
Price last confirmed 15 days ago
14 more retailers have this diamond
Prices start from $346 NZDSave up to $1,125 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
$346 NZD