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 $411 AUD
$289 USD
As of October 30, 2026
Save $2,493 AUD (86%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: $2,904 AUD at Brilliant Earth · As of October 31, 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 24 retailers as of October 30, 2026, with prices from $411 to $2,904, a $2,493 spread on the same certified stone. Brilliant Earth lists it at $2,904. 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

How it works →
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: Oct 30
Current: $2,904 AUD|Low: $394 AUD|High: $2,904 AUD|Avg: $1,156 AUD
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 1, 2026
Retailer 4$411 AUD
Retailer 7$460 AUD
Retailer 5$510 AUD
Retailer 3$686 AUD
Retailer 13$733 AUD
Retailer 9$864 AUD
Retailer 6$867 AUD
Retailer 12$876 AUD
Retailer 8$902 AUD
Retailer 11$1,244 AUD
Retailer 15$1,566 AUD
Retailer 10$1,608 AUD
Retailer 2$2,043 AUD
Retailer 14$2,128 AUD
Brilliant Earth$2,904 AUD

43 data points across 15 retailers

24 retailers$411 AUD to $2,904 AUD

A
Cheapest Retailer
-
$411 AUD
$289 USD
A
Retailer 2
-
$460 AUD
$323 USD
View
Final sale: no returns
A
Retailer 3
-
$477 AUD
$335 USD
View
Retailer 4
-
$510 AUD
$358 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
$510 AUD
$358 USD
View
A
Retailer 6
-
$686 AUD
$482 USD
View
A
Retailer 7
-
$733 AUD
$515 USD
View
A
Retailer 8
-
$864 AUD
€578 EUR
View
A
Retailer 9
-
$867 AUD
$609 USD
View
A
Retailer 10
-
$876 AUD
ZAR 9,943 ZAR
View
A
Retailer 11
-
$902 AUD
£499 GBP
View
B+
Retailer 12
-
$1,244 AUD
View
B+
Retailer 13
-
$1,254 AUD
$881 USD
View
B+
Retailer 14
-
$1,566 AUD
$1,100 USD
View
B+
Retailer 15
-
$1,608 AUD
View
B+
Retailer 16
-
$1,639 AUD
$1,151 USD
View
B+
Retailer 17
-
$1,709 AUD
$1,200 USD
View
B+
Retailer 18
-
$1,815 AUD
$1,275 USD
View
B
Retailer 19
-
$1,996 AUD
£1,104 GBP
View
B+
Retailer 20
-
$2,043 AUD
£1,130 GBP
View
B
Retailer 21
-
$2,103 AUD
$1,477 USD
View
Retailer 22
-
$2,128 AUD
$1,495 USD
View
Price last confirmed 11 days ago
Retailer 23
-
$2,627 AUD
$1,845 USD
View
Price last confirmed 11 days ago
Most Expensive
B
Brilliant Earth
15733199A · Oct 31
$2,904 AUD
$2,040 USD
View
23 more retailers have this diamond
Prices start from $411 AUDSave up to $2,493 AUD

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
$411 AUD