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Radiant|Lab Grown|IGI

1.28ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG732507011

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG732507011

Diamond specifications and retailer prices

From $514 NZD
$289 USD
As of November 2, 2026
Save $3,112 NZD (86%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $3,626 NZD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.28ct lab-grown radiant diamond

This 1.28ct lab-grown radiant 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 LG732507011 or 732507011. Listed at 25 retailers as of November 2, 2026, with prices from $514 to $3,626, a $3,112 spread on the same certified stone. Brilliant Earth lists it at $3,626. 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 angle43.2°
Pavilion angle35.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG732507011
Dimensions7.79 × 5.28 × 3.59 mm
L/W Ratio1.48
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.79 mm5.28 mm1.28 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG732507011
Side View
Table 65.0%Crown 43.2°Girdle: MED-STKPavilion 35.4°Culet: NoneDepth 68.0%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $3,626 NZD|Low: $492 NZD|High: $3,626 NZD|Avg: $1,455 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
November 2, 2026
Retailer 4$514 NZD
Retailer 7$574 NZD
Retailer 5$636 NZD
Retailer 3$857 NZD
Retailer 13$915 NZD
Retailer 10$1,079 NZD
Retailer 6$1,082 NZD
Retailer 8$1,098 NZD
Retailer 2$1,126 NZD
Retailer 12$1,553 NZD
Retailer 15$1,955 NZD
Retailer 11$2,008 NZD
Retailer 9$2,551 NZD
Retailer 14$2,657 NZD
Brilliant Earth$3,626 NZD

43 data points across 15 retailers

25 retailers$514 NZD to $3,626 NZD

A
Cheapest Retailer
-
$514 NZD
$289 USD
A
Retailer 2
-
$574 NZD
$323 USD
View
Final sale: no returns
A
Retailer 3
-
$595 NZD
$335 USD
View
Retailer 4
-
$636 NZD
$358 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$636 NZD
$358 USD
View
A
Retailer 6
-
$857 NZD
$482 USD
View
A
Retailer 7
-
$915 NZD
$515 USD
View
A
Retailer 8
-
$1,079 NZD
€578 EUR
View
A
Retailer 9
-
$1,082 NZD
$609 USD
View
A
Retailer 10
-
$1,098 NZD
ZAR 9,978 ZAR
View
A
Retailer 11
-
$1,126 NZD
£499 GBP
View
B+
Retailer 12
-
$1,553 NZD
A$1,344 AUD
View
B+
Retailer 13
-
$1,566 NZD
$881 USD
View
B+
Retailer 14
-
$1,955 NZD
$1,100 USD
View
B+
Retailer 15
-
$2,008 NZD
A$1,738 AUD
View
B+
Retailer 16
-
$2,046 NZD
$1,151 USD
View
B+
Retailer 17
-
$2,133 NZD
$1,200 USD
View
B+
Retailer 18
-
$2,266 NZD
$1,275 USD
View
B
Retailer 19
-
$2,492 NZD
£1,104 GBP
View
B+
Retailer 20
-
$2,551 NZD
£1,130 GBP
View
B
Retailer 21
-
$2,625 NZD
$1,477 USD
View
Retailer 22
-
$2,657 NZD
$1,495 USD
View
Price last confirmed 12 days ago
B
Retailer 23
-
$3,270 NZD
$1,840 USD
View
Retailer 24
-
$3,279 NZD
$1,845 USD
View
Price last confirmed 12 days ago
Most Expensive
B
Brilliant Earth
15733199A · Nov 2
$3,626 NZD
$2,040 USD
View
24 more retailers have this diamond
Prices start from $514 NZDSave up to $3,112 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 Radiant
$514 NZD