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Radiant|Lab Grown|IGI

1.04ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG656491376

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

Certificate IGI LG656491376

Diamond specifications and retailer prices

From €140 EUR
As of November 6, 2026
Save €380 EUR (73%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: €519 EUR at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.04ct lab-grown radiant diamond

This 1.04ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG656491376 or 656491376. Listed at 5 retailers as of November 6, 2026, with prices from €140 to €519, a €380 spread on the same certified stone. Brilliant Earth lists it at €519. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.04
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.7°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG656491376
Dimensions5.59 × 5.59 × 3.92 mm
L/W Ratio1.00
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
5.59 mm5.59 mm1.04 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG656491376
Side View
Table 67.0%Crown 42.7°Girdle: Slightly ThickPavilion 39°Culet: NoneDepth 70.1%

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: Nov 6
Current: €519 EUR|Low: €140 EUR|High: €562 EUR|Avg: €357 EUR|-3.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 5€140 EUR
Retailer 8€194 EUR
Retailer 3€224 EUR
Retailer 2€289 EUR
Retailer 9€371 EUR
Retailer 6€413 EUR
Retailer 4€416 EUR
Retailer 7€425 EUR
Brilliant Earth€519 EUR
Retailer 10€562 EUR

12 data points across 10 retailers

5 retailers€140 EUR to €519 EUR

A
Cheapest Retailer
-
€140 EUR
Final sale: no returns
B+
Retailer 2
-
€224 EUR
View
A
Retailer 3
-
€289 EUR
View
Retailer 4
-
€416 EUR
View
Price last confirmed 17 days ago
Most Expensive
B+
Brilliant Earth
20628504A · Nov 6
€519 EUR
$580 USD
View
4 more retailers have this diamond
Prices start from €140 EURSave up to €380 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
1.04ct Radiant
€140 EUR