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 €259 EUR
$289 USD
As of October 30, 2026
Save €1,567 EUR (86%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: €1,826 EUR 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 €259 to €1,826, a €1,567 spread on the same certified stone. Brilliant Earth lists it at €1,826. 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
Color
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: €1,826 EUR|Low: €248 EUR|High: €1,826 EUR|Avg: €725 EUR
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
October 31, 2026
Retailer 4€259 EUR
Retailer 7€289 EUR
Retailer 5€320 EUR
Retailer 3€431 EUR
Retailer 12€461 EUR
Retailer 2€543 EUR
Retailer 6€545 EUR
Retailer 11€551 EUR
Retailer 8€567 EUR
Retailer 10€782 EUR
Retailer 15€985 EUR
Retailer 9€1,011 EUR
Retailer 13€1,287 EUR
Retailer 14€1,338 EUR
Brilliant Earth€1,826 EUR

42 data points across 15 retailers

24 retailers€259 EUR to €1,826 EUR

A
Cheapest Retailer
-
€259 EUR
$289 USD
A
Retailer 2
-
€289 EUR
$323 USD
View
Final sale: no returns
A
Retailer 3
-
€300 EUR
$335 USD
View
A
Retailer 4
-
€320 EUR
$358 USD
View
A
Retailer 5
-
€320 EUR
$358 USD
View
A
Retailer 6
-
€431 EUR
$482 USD
View
A
Retailer 7
-
€461 EUR
$515 USD
View
A
Retailer 8
-
€543 EUR
View
A
Retailer 9
-
€545 EUR
$609 USD
View
A
Retailer 10
-
€551 EUR
ZAR 9,943 ZAR
View
A
Retailer 11
-
€567 EUR
£499 GBP
View
B+
Retailer 12
-
€782 EUR
A$1,344 AUD
View
B+
Retailer 13
-
€789 EUR
$881 USD
View
B+
Retailer 14
-
€985 EUR
$1,100 USD
View
B+
Retailer 15
-
€1,011 EUR
A$1,738 AUD
View
B+
Retailer 16
-
€1,030 EUR
$1,151 USD
View
B+
Retailer 17
-
€1,074 EUR
$1,200 USD
View
B+
Retailer 18
-
€1,141 EUR
$1,275 USD
View
B
Retailer 19
-
€1,255 EUR
£1,104 GBP
View
B+
Retailer 20
-
€1,287 EUR
£1,132 GBP
View
B
Retailer 21
-
€1,322 EUR
$1,477 USD
View
Retailer 22
-
€1,338 EUR
$1,495 USD
View
Price last confirmed 10 days ago
Retailer 23
-
€1,651 EUR
$1,845 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
15733199A · Oct 31
€1,826 EUR
$2,040 USD
View
23 more retailers have this diamond
Prices start from €259 EURSave up to €1,567 EUR

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
€259 EUR