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Round|Lab Grown|IGI

1.28ct E IF Round Lab Grown Diamond

ID • E/IF • IGI LG588375105

Shape and cutting style on the report: Round brilliant

Certificate IGI LG588375105

Diamond specifications and retailer prices

From $429 NZD
As of November 3, 2026
Save $1,928 NZD (82%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $2,357 NZD at Reve Diamonds · As of November 4, 2026
View at Reve Diamonds

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 LG588375105 or 588375105. Listed at 19 retailers as of November 3, 2026, with prices from $429 to $2,357, a $1,928 spread on the same certified stone. Reve Diamonds lists it at $2,357. 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°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG588375105
Dimensions7.03 × 6.99 × 4.25 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
7.03 mm6.99 mm1.28 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG588375105
Side View
Table 59.0%Crown 34°Girdle: MediumPavilion 41°Culet: NoneDepth 60.6%

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: $999 NZD|Low: $429 NZD|High: $2,209 NZD|Avg: $1,114 NZD|+3.5%
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
November 5, 2026
Retailer 13$429 NZD
Retailer 12$498 NZD
Retailer 2$534 NZD
Retailer 10$534 NZD
Retailer 6$859 NZD
Retailer 5$898 NZD
Retailer 9$919 NZD
Retailer 1$999 NZD
Retailer 7$1,306 NZD
Retailer 11$1,714 NZD
Retailer 3$1,721 NZD
Retailer 8$2,134 NZD
Retailer 4$2,191 NZD

37 data points across 13 retailers

19 retailers$429 NZD to $2,357 NZD

A
Cheapest Retailer
-
$429 NZD
A
Retailer 2
-
$479 NZD
View
Final sale: no returns
A
Retailer 3
-
$498 NZD
View
A
Retailer 4
-
$534 NZD
View
Retailer 5
-
$534 NZD
View
Price last confirmed 11 days ago
A
Retailer 6
-
$859 NZD
View
A
Retailer 7
-
$898 NZD
View
A
Retailer 8
-
$919 NZD
View
A
Retailer 9
-
$962 NZD
View
A
Retailer 10
-
$962 NZD
View
A
Retailer 11
-
$999 NZD
View
A
Retailer 12
-
$1,277 NZD
View
A
Retailer 13
-
$1,306 NZD
View
B+
Retailer 14
-
$1,714 NZD
View
B+
Retailer 15
-
$1,721 NZD
View
B+
Retailer 16
-
$1,806 NZD
View
B+
Retailer 17
-
$2,134 NZD
View
B+
Retailer 18
-
$2,191 NZD
View
Most Expensive
B
Reve Diamonds
E25E1660C · Nov 4
$2,357 NZD
$1,329 USD
View
18 more retailers have this diamond
Prices start from $429 NZDSave up to $1,928 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
$429 NZD