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Radiant|Lab Grown|IGI

1.09ct E IF Radiant Lab Grown Diamond

ID • E/IF • IGI LG635497403

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

Certificate IGI LG635497403

Diamond specifications and retailer prices

From €187 EUR
$209 USD
As of October 30, 2026
Save €907 EUR (83%) vs most expensive(unlock to see where)
24 retailers carry this diamond
Most expensive: €1,674 EUR at Brilliant Earth · As of October 15, 2026
View at Brilliant Earth

About this 1.09ct lab-grown radiant diamond

This 1.09ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG635497403 or 635497403. Listed at 24 retailers as of October 30, 2026, with a 485% 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

1.09
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle43°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG635497403
Dimensions7.19 × 5.13 × 3.49 mm
L/W Ratio1.40
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
7.19 mm5.13 mm1.09 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG635497403
Side View
Table 65.0%Crown 43°Girdle: MED-STKPavilion 34.7°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: €1,674 EUR|Low: €180 EUR|High: €1,763 EUR|Avg: €575 EUR|+1.6%
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
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 1, 2026
Retailer 6€187 EUR
Retailer 4€209 EUR
Retailer 9€217 EUR
Retailer 7€232 EUR
Retailer 10€232 EUR
Retailer 3€247 EUR
Retailer 16€313 EUR
Retailer 13€377 EUR
Retailer 17€399 EUR
Retailer 12€428 EUR
Retailer 11€513 EUR
Retailer 14€565 EUR
Retailer 18€567 EUR
Retailer 8€746 EUR
Retailer 15€838 EUR
Retailer 2€930 EUR
Retailer 19€1,083 EUR
Retailer 5€1,094 EUR
Brilliant Earth€1,674 EUR

38 data points across 19 retailers

24 retailers€187 EUR to €1,094 EUR

A
Cheapest Retailer
-
€187 EUR
$209 USD
A
Retailer 2
-
€209 EUR
$234 USD
View
Final sale: no returns
A
Retailer 3
-
€217 EUR
$242 USD
View
Retailer 4
-
€232 EUR
$259 USD
View
Price last confirmed 7 days ago
A
Retailer 5
-
€232 EUR
$259 USD
View
Retailer 6
-
€247 EUR
£217 GBP
View
Price last confirmed 16 days ago
A
Retailer 7
-
€313 EUR
$350 USD
View
A
Retailer 8
-
€377 EUR
View
A
Retailer 9
-
€399 EUR
ZAR 7,193 ZAR
View
A
Retailer 10
-
€428 EUR
£377 GBP
View
A
Retailer 11
-
€472 EUR
$528 USD
View
A
Retailer 12
-
€513 EUR
$573 USD
View
A
Retailer 13
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€565 EUR
$631 USD
View
A
Retailer 14
-
€567 EUR
A$975 AUD
View
A
Retailer 15
-
€576 EUR
$643 USD
View
B+
Retailer 16
-
€746 EUR
$833 USD
View
B+
Retailer 17
-
€792 EUR
$885 USD
View
B+
Retailer 18
-
€793 EUR
$886 USD
View
B+
Retailer 19
-
€838 EUR
A$1,441 AUD
View
B+
Retailer 20
-
€844 EUR
£742 GBP
View
B+
Retailer 21
-
€930 EUR
£818 GBP
View
Retailer 22
-
€1,083 EUR
$1,210 USD
View
Price last confirmed 14 days ago
B
Retailer 23
-
€1,094 EUR
$1,222 USD
View
Most Expensive
Brilliant Earth
10800488A · Oct 15
€1,674 EUR
$1,870 USD
View
Price last confirmed 17 days ago
23 more retailers have this diamond
Prices start from €187 EURSave up to €907 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
1.09ct Radiant
€187 EUR