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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 €186 EUR
$209 USD
As of November 2, 2026
Save €904 EUR (83%) vs most expensive(unlock to see where)
23 retailers carry this diamond
Most expensive: €1,667 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 23 retailers as of November 1, 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
Colour
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
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: €1,667 EUR|Low: €179 EUR|High: €1,756 EUR|Avg: €582 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 3, 2026
Retailer 6€186 EUR
Retailer 4€209 EUR
Retailer 9€216 EUR
Retailer 7€231 EUR
Retailer 10€231 EUR
Retailer 3€246 EUR
Retailer 18€312 EUR
Retailer 15€375 EUR
Retailer 13€399 EUR
Retailer 2€426 EUR
Retailer 11€511 EUR
Retailer 16€563 EUR
Retailer 12€565 EUR
Retailer 8€743 EUR
Retailer 17€835 EUR
Retailer 14€926 EUR
Retailer 19€1,079 EUR
Retailer 5€1,090 EUR
Brilliant Earth€1,667 EUR

40 data points across 19 retailers

23 retailers€186 EUR to €1,090 EUR

A
Cheapest Retailer
-
€186 EUR
$209 USD
A
Retailer 2
-
€209 EUR
$234 USD
View
Final sale: no returns
A
Retailer 3
-
€216 EUR
$242 USD
View
Retailer 4
-
€231 EUR
$259 USD
View
Price last confirmed 9 days ago
A
Retailer 5
-
€231 EUR
$259 USD
View
A
Retailer 6
-
€312 EUR
$350 USD
View
A
Retailer 7
-
€375 EUR
View
A
Retailer 8
-
€399 EUR
ZAR 7,229 ZAR
View
A
Retailer 9
-
€426 EUR
£377 GBP
View
Retailer 10
-
€470 EUR
$528 USD
View
Price last confirmed 7 days ago
A
Retailer 11
-
€511 EUR
$573 USD
View
A
Retailer 12
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€563 EUR
$631 USD
View
A
Retailer 13
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€565 EUR
A$975 AUD
View
B+
Retailer 14
-
€573 EUR
$643 USD
View
B+
Retailer 15
-
€743 EUR
$833 USD
View
B+
Retailer 16
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€789 EUR
$885 USD
View
B+
Retailer 17
-
€790 EUR
$886 USD
View
B+
Retailer 18
-
€835 EUR
A$1,441 AUD
View
B+
Retailer 19
-
€840 EUR
£742 GBP
View
B+
Retailer 20
-
€926 EUR
£818 GBP
View
Retailer 21
-
€1,079 EUR
$1,210 USD
View
Price last confirmed 15 days ago
B
Retailer 22
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€1,090 EUR
$1,222 USD
View
Most Expensive
Brilliant Earth
10800488A · Oct 15
€1,667 EUR
$1,870 USD
View
Price last confirmed 18 days ago
22 more retailers have this diamond
Prices start from €186 EURSave up to €904 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
€186 EUR